EVERY FILE EXTENSION in the World: A 2 Z

[manimarank]

Every File Extension in the World

This is a list of file extension names or suffixes that indicate the format or usage of a file and a brief description of that file extension. In general, if you have the program that uses that file extension, that program can be used to open or otherwise use the file.

A   Library file (Unix)
A   Object code library
A3L   Authorware 3.x library
A3M   Authorware MacIntosh file (unpackaged)
A3W   Authorware Windows file (unpackaged)
A4L   Authorware 4.x library
A4M   Authorware MacIntosh file (unpackaged)
A4P   Authorware file (packaged without runtime)
A5L   Authorware 5.x library
A5W   Authorware Windows file (unpackaged)
AA   Audible audio file (commonly used for downloadable audio books)
AAM   Authorware shocked file
AAS   Authorware shocked packet
AB   Applix Builder file
ABF   Adobe Binary Screen Font
ABK   Corel Draw AutoBackup
ABK   Backup file (PrintMaster Gold)
ABM   Audio album file (HitPlayer)
ABO   Applix Builder Turbo file
ABS   Standard GNU compiler output file for a PC platform
ABS   Sometimes used to denote an abstract (as in an abstract or summary of a scientific paper) AutoBackup
ABS   MPEG Audio Sound file
AC$   AutoCAD Undo Info file
ACA   HTTP animation file (Microsoft Agent)
ACA   Project Manager Workbench file
ACB   ACBM Graphic image
ACC   DR-DOS Viewmax file
ACD   Character definiton file (Microsoft Agent)
ACE   ACE Archiver Compression file
ACF   HTTP character file (Microsoft Agent)
ACI   ACI development appraisal (ACIWEB)
ACL   Corel Draw 6 keyboard accelerator file
ACM   Interplay compressed sound file (Fallout 1,2, Baulder's Gate)
ACM   Dynamic Link Library (DLL)
ACM   Windows system directory file
ACP   Microsoft Office Assistant Preview file
ACR   American College of Radiology file
ACS   Character structered storage file (Microsoft Agent)
ACT   FoxPro Foxdoc Action Diagram
ACT   Action Presentation
ACT   Documenting wizard action diagram (Microsoft Visual FoxPro)
ACT   Microsoft Office Assistant Actor file
ACV   Used to Compress and decompress audio data
AD   After Dark screensaver
Ada   Ada source text file (non-GNAT)
ADB   HP 100LX Organizer Appointment database
ADB   Ada source text body file (GNAT)
ADC   Scanstudio 16 color Bitmap Graphic file
ADD   OS/2 adapter driver file used in the boot process
ADF   Amiga disk file
ADI   AutoCAD device-independent binary plotter file
ADL   QEMM Mca adaptor description library
ADM   Windows NT policy template
ADM   After Dark MultiModule screensaver (Microsoft)
ADN   Lotus 1-2-3 Add-In file
ADP   FaxWorks Faxmodem setup file
ADP   Astound Dynamite file
ADP   Dynamic Page file (AOLserver)
ADR   Smart Address address book
ADR   After Dark Randomizer screensaver
ADS   Ada source text specification file (GNAT)
ADT   AdTech Fax file
ADT   HP NewWave datafile for card applications
ADX   Lotus Approach dBase Index
ADX   Archetype Designer Document
ADX   Dynazip Active Delivery script
ADZ   Packed ADF file (Extracts with WinZip)
AE   Author/Editor file (SoftQuad)
AEP   ArcExplorer project file
AF2   ABC FlowCharter 2.0 Flowchart
AF3   ABC Flowchart
AFC   Apple Sound file
AFI   Truevision Bitmap graphic
AFM   HP NewWave Cardfile application
AFM   Adobe metrics
AG   Applix graphic
AI   Corel Trace drawing
AI   Adobe Illustrator drawing
AIF   Audio Interchange File, a sound format used by Silicon Graphics and Macintosh applications
AIFC   Similar to AIF (compressed)
AIFF   Similar to AIF
AIM   AOL Instant Messenger Launch file
AIN   AIN Compressed archive
AIO   APL transfer file
AIS   Velvet Studio Instruments file
AIS   Xerox Arry of Intensity Samples Graphic
AIS   ACDSee Image Sequence
AIX   HP NewWave Cardfile Application data
AKB   HaleyAuthority Authority Knowledge Base File
AKW   Contains all A-keywords in the RoboHELP Help Project Index Designer not associated with topics
ALAW   European Telephony audio
ALB   JASC Image Commander album
ALI   Document file (SAP proprietary format)
ALIAS   Alias Image
ALL   WordPerfect for Windows General printer information file
ALL   Arts & Letters Library
ALS   Alias Image
ALT   WordPerfect Library Menu
AM   Applix SHELF Macro
AMF   DSMIA/Asylum module music (Crusader,No Remorse,Aladdin)
AMF   Music file (Advanced Module Format)
AMG   ACTOR System image
AMG   AMGC Compressed Archive File
AMI   Annotation file (Cocreate SolidDesigner)
AMS   Extreme's Tracker Module
AMS   Velvet Studio music module (MOD) File
AMU   Sony Photo Album
AN   Text file (Sterling Software) (Groundworks COOL Business Team Model)
ANC   Canon Computer Pattern Maker file that is a selectable list of pattern colors
ANI   Microsoft Windows Animated cursor
ANM   DeluxPaint Animation
ANN   Windows 3.x Help annotation
ANS   ANSI Text file
ANT   SimAnt for Windows saved game
AOM   Adobe Download Manager Online Manager Shortcut
AOM   Adobe After Effects Output Settings
AOS   Nokia 9000 Add-on software
AOT   Applicatio binary object template file (ZenWorks snAPPshot)
AP   WHAP Compressed Amiga archive
AP   Applix Presents file
APC   Lotus 1-2-3 Printer driver
APC   Compiled application file (Centura Team Developer)
APD   Lotus 1-2-3 Printer driver
APD   Dynamic application library file (Centura Team Developer)
APE   Winamp Plugins AVS File
APE   Monkey's Audio Lossless Audio Compression Format
APF   Project file (Allaire) (Created by Homesite)
APF   Lotus 1-2-3 Printer driver
API   Lotus 1-2-3 Printer driver
API   Application Program Interface; used by Adobe Acrobat
APL   APL Workspace file
APL   Application library file (Centura Team Developer)
APP   Symphony Add-in Application
APP   Generated application or active document (Microsoft Visual FoxPro)
APP   dBase Application Generator Object
APP   DR-DOS Executable Application
APP   FoxPro Generated Application
APP   Normal mode application file (Centura Team Developer)
APR   Employee Appraiser Performance Review file
APR   Lotus Approach 97 View file
APR   ArcView project file
APS   Advanced patching systems with error checking, (Similar to IPS)
APS   Microsoft Visual C++ file
APT   Text mode application file (Centura Team Developer)
APT   Lotus Approach Data view file
APX   Borland C++ Appexpert database
APX   Lotus Approach Paradox-Specific information file
AQ   Applix data
ARC   SQUASH Compressed archive
ARC   LH ARC (old version) compressed archive
ARF   Automatic Response file
ARI   Aristotle audio file
ARI   ARI Compressed archive
ARJ   Robert Jung ARJ compressed archive (ARJ)
ARK   ARC File Archiver CPM/Port archive
ARL   AOL v4.0 organizer file
ARR   Atari Cubase Arrangement
ART   Canon Crayola art
ART   Clip Art
ART   Ray Tracer file
ART   First Publisher Raster graphic
ART   AOL Image file compressed using the Johson-Grace compression algorithm
ART   Xara Studio drawing
ARX   AutoCAD Runtime Extension
ARX   ARX Compressed Archive
AS   Applix Spreadsheet
ASA   Microsoft Visual InterDev file
ASC   PGP armored encrypted file
ASC   ASCII text file
ASD   Lotus 1-2-3 Screen driver
ASD   Microsoft Advanced Streaming Format (ASF) description file; opens with NSREX
ASD   Astound Presentation
ASD   WinWord AutoSave file
ASE   Velvet Studio Sample file
ASF   Microsoft Advanced Streaming Format
ASF   StratGraphics Datafile
ASF   Lotus 1-2-3 Screen font
ASF   Music file (Electronic Arts)
ASH   TASM 3.0 Assembly language header
ASI   Borland C++/Turbo C Assembler Include file
ASM   Pro/E assembly file
ASM   Assembler Language source file
ASO   Astound Dynamite Object
ASP   Procomm Plus setup and connection script
ASP   Astound Presentation
ASP   Active Server Page (an HTML file containing a Microsoft server-processed script)
AST   Claris Works "assistant" file
AST   Astound multimedia file
ASV   DataCAD Autosave file
ASX   Microsoft Advanced Streaming Redirector file
ASX   Video file
ASX   Cheyenne Backup script
AT2   Aldus Persuasion 2.0 Auto Template
ATM   Adobe Type Manager data/info file
ATT   AT&T Group 4 bitmap
ATW   AnyTime Deluxe for Windows personal information manager file from Individual Software MultiModule screensaver
AU   Audio U-law (pronounced mu-law)
AU   Sun/NeXT/DEC/UNIX sound file
AUD   Audio file (Westwood Studios) (Kyrandia 3,C&C,RedAlert,C&C:TS)
AUP   Audacity project file
AUX   ChiWriter Auxilliary Dictionary file
AUX   TeX/LaTeX Auxilliary Reference file
AVA   Avagio Publication
AVB   Inculan Anti-Virus virus infected file
AVG   AVG Virus Information Database
AVI   Microsoft Audio Video Interleaved file for Windows movie
AVR   Audio Visual Research file
AVS   Stardent AVS-X Image
AVS   Application Visualization System file
AVX   File Extension (ArcView)
AW   Applix Words file
AW   HP AdvanceWrite Text file
AWD   FaxView Document image
AWE   Acrobat Bookmark XML File
AWK   AWK Script/Program
AWM   Animation Works Movie
AWR   Telsis file for digitally stored audio
AWS   StatGraphics Data file
AXL   ArcIMS XML project file
AXT   ASCII application object template (ZenWorks snAPPshot)
AXX   ARJ compressed file from a multi-volume archive (xx = a number from 01 to 99)

[manimarank]

 File Extension Listing for "B":

B   Applause Batch list
B_W   Atari/Macintosh black and white graphic
B&W   1st Reader Mono binary screen image
B&W   Atari/Macintosh black and white graphic
B1N   1st Reader Mono and color binary screen image
B30   ABC Ventura publisher printer font
B4   Helix Nuts and Bolts file
B8   Raw graphic file (Piclab Plane II)
BAD   Oracle bad file
BAK   Backup file
BAL   Ballade Music score
BAND   Garageband Project song
BAR   dBase Application Generator Horizontal menu object
BAS   BASIC source code
BAT   Batch file
BB   Papyrus Database backup
BBL   TeX/BibTeX Bibliographic reference file
BBM   Deluxe Paint Bitmap image
BBS   Bulletin Board Sytem text
BCH   Datalex Entry Point 90 Data file
BCH   Batch Process Object (dBase Application Generator)
BCM   Microsoft Works Communications file
BCO   Bitstream Outline font description file
BCP   Borland C++ Makefile
BCW   Borland C++ 4.5 Environment settings file
BDB   Microsoft Works Dababase file
BDF   Egret Datafile
BDF   West Point Bridge Designer file
BDR   Microsoft Publisher Border
BEZ   Bitstream Outline font description
BF2   Bradford 2 Font
BFC   Windows 95 Briefcase Document
BFM   Font Metrics file (Unix/Mainframe)
BFX   Fax document file (BitFax)
BG   Microsoft Backgammon Game file
BGA   OS/2 Graphic array
BGI   Borland Graphics Interface Driver
BGL   Microsoft Flight Simulator Scenery file
BHF   pcAnywhere Host file
BI   Binary file
BIB   TeX/BibTeX Literature Database
BIB   Database
BIB   Bibliography file (ASCII)
BIF   Image Capture Board Binary Image black & white graphic
BIF   GroupWise initialization file
BIFF   XLITE 3D file
BIN   Binary file
BIO   OS/2 Bios file
BIT   X11 Bitmap
BK   JetFax Faxbook file
BK   Backup file (Generic)
BK!   WordPerfect for Windows Document backup
BK$   Backup file (Generic)
BK1   WordPerfect for Windows Timed backup file for document window 1
BK2   WordPerfect for Windows Timed backup file for document window 2
BK3   WordPerfect for Windows Timed backup file for document window 3
BK4   WordPerfect for Windows Timed backup file for document window 4
BK5   WordPerfect for Windows Timed backup file for document window 5
BK6   WordPerfect for Windows Timed backup file for document window 6
BK7   WordPerfect for Windows Timed backup file for document window 7
BK8   WordPerfect for Windows Timed backup file for document window 8
BK9   WordPerfect for Windows Timed backup file for document window 9
BKP   TurboVidion Dialog Designer Backup
BKS   Microsoft Works Spreadsheet Backup
BKS   IBM BookManager Read bookshelf file
BKW   FontEdit Fontset mirror image
BLB   Resource archive (DreamWorks),(Neverhood)
BLD   BASIC Bloadable picture file
BLK   WordPerfect for Windows Temporary file
BLK   Alias Wavefront Image
BM   Windows system Bitmap
BM1   Apogee BioMenace data
BMA   Song format used by Beatmania emulators
BMF   Corel Gallery file
BMF   Binary Material File
BMK   Windows Help bookmark
BMP   Windows or OS/2 bitmap
BN   Instrument bank file (AdLib)
BNK   Instrument Bank file (AdLib)
BNK   Sound effects bank file (Electronic Arts)
BOL   Compressed archive library file (Microsoft Booasm.arc)
BOM   Bill of materials file (Orcad Schematic Capture)
BOO   Microsoft Booasm.arc Compressed archive
BOOK   Adobe FrameMaker Book
BOX   Lotus Notes file
BPC   Business Plan Toolkit Chart
BPL   Borland Delphi 4 packed library
BPS   Microsoft Works Document
BPT   CorelDraw Bitmap fills file
BPX   Truevision Targa Bitmap
BQY   BrioQuery file
BR   Bridge Script
BR0   PrintMaster graphics file
BRD   Eagle Layout file
BRK   Brooktrout Fax-Mail file
BRW   Application file associated with financial institution(s) loan applications
BRX   A file for browsing an index of multimedia options
BRZ   DbBRZ file for very large Db backup or restore
BS_   Microsoft Bookshelf Find Menu shell extension
BS1   Apogee Blake Stone data file
BSA   BSARC Compressed archive
BSC   Fortran Pwbrmake Object
BSC   MS Developer Studio (MSDev) browser information
BSC   Apple II Compressed archive
BSP   Quake map file
BTM   Batch file used by Norton Utilities
BTR   Database file (Btrieve 5.1)
BUD   Backup disk for Quicken
BUG   Bugs and Problems file
BUN   CakeWalk Audio Bundle (a MIDI program)
BUP   Backup
BUT   Buttons! Button definition
BUY   Movie data file
BV1   WordPerfect for Windows Overflow file below insert point in document 1
BV2   WordPerfect for Windows Overflow file below insert point in document 2
BV3   WordPerfect for Windows Overflow file below insert point in document 3
BV4   WordPerfect for Windows Overflow file below insert point in document 4
BV5   WordPerfect for Windows Overflow file below insert point in document 5
BV6   WordPerfect for Windows Overflow file below insert point in document 6
BV7   Wordperfect for Windows Overflow file below insert point in document 7
BV8   WordPerfect for Windows Overflow file below insert point in document 8
BV9   WordPerfect for Windows Overflow file below insert point in document 9
BW   Silicon Graphics Raw red,green and blue bytes file
BW   SGI Black and White image file
BWB   Visual Baler Spreadsheet application
BWR   Kermit Beware buglist
BWV   Business Wave file
BYU   BYU Movie
BZ   Bzip compressed file (Inix)
BZ2   Bzip compressed file (Unix) (replaces Bz)

[manimarank]

File Extension Listing for "C":

C   Site configuration for Secure Remote (CheckPoint VPN)
C   C code
C--   Sphinx C-- Source code
C00   Ventura Publisher Print file
C01   Typhoon wave
C86   Computer Innovation (C86) Source code
CA   Telnet Server Initial cache data file
CAB   Microsoft cabinet file (program files compressed for software distribution)
CAC   dBase IV Executable file
CAD   Softdesk Drafix Cad file
CAG   Catalog file (Microsoft Clip Gallery v. 2.x,3.x,4.x)
CAL   SuperCalc 4/5 Spreadsheet
CAL   Calendar schedule data file
CAL   CALS Compressed Bitmap
CAM   Casio camera file
CAN   Navigator Fax
CAP   Compressed music file
CAP   Telix Session Capture file
CAP   Ventura Publisher Caption
CAR   AtHome assistant file
CAS   Comma-delimited ASCII file
CAT   dBase Catalogue file
CAT   Quicken IntelliCharge categorization file
CB   Microsoft clean boot file
CBC   CubiCalc Fuzzy Logic System file
CBF   Vietcong (game) Pterodon big file
CBI   Column binary file (used in IBM mainframe systems)
CBL   Cobol Source code
CBM   XLib Compiled Bitmap
CBR   Comic book or paperback RAR file (decompress with RAR utility)
CBT   Generic Computer based training file
CBZ   Comic book or paperback ZIP file (decompress with WinZip or similar program)
CC   C++ Source code
CC   Visual dBASE custom class file
CC3   Close Combat 3 file
CCA   cc:mail archive file
CCB   Visual Basic Animated Button configuration file
CCC   Curtain Call Native bitmap graphic
CCD   Elaborate Bytes Clone CD mapfile for creating and reading .img files
CCE   Data file (Calendar Creator Plus)
CCF   Symphony Communications Configuration file
CCF   Multimedia Viewer configuration file used in OS/2
CCH   Corel Chart
CCL   Intalk Communication Command Language
CCM   Lotus CC:Mail "box" file (for example, INBOX.CCM)
CCO   XBTX Graphics
CCO   CyberChat data file
CCT   Macromedia Director Shockwave cast file
CDA   CD Audio Track
CDB   CardScan Database (CardScan)
CDB   TCU Turbo C Utilities Main database
CDB   Conceptual model backup file (PowerDesigner)
CDB   Clipboard file
CDF   Microsoft Channel Definition Format
CDF   Netcdf Graphic file
CDFS   Compact Disk filing system (WindRiver)
CDI   Phillips Compact Disk Interactive file
CDK   Atari Calamus Document
CDM   Visual dBASE custom data module
CDM   Conceptual data model file (PowerDesigner Data Architect) (Sybase)
CDM   Conceptual model file (PowerDesigner)
CDR   Raw Audio-CD data file
CDR   Corel Vector Graphic Drawing File
CDR   Corel Draw Vector drawing file
CDT   CorelDraw Data file
CDT   Corel Draw template
CDX   Microsoft's Visual Foxpro index
CDX   Corel Draw compressed drawing
CE   The FarSide Computer Calendar Main CE file
CEF   Cruzer encrypted file (used to secure files on Cruzer USB flash drives)
CEG   Tempra Show Bitmap graphic
CEL   AutoDesk Animator Cel Image
CEL   CIMFast Event Language file
CER   Certificate file (MIME x-x509-ca-cert)
CEX   Caddie Exchange file
CF   Imake Configurtion file
CFB   Comptons Multimedia file
CFG   Configuration file
CFL   CorelFLOW Chart
CFM   Visual dBASE Windows customer form
CFM   Corel FontMaster file
CFM   Creative FM-Music
CFM   ColdFusion template
CFN   Atari Calamus Font data file
CFO   TCU Turbo C Utilities C form object
CFP   The Complete Fax Portable fax file
CGA   Ventura Publisher Display font file
CGI   Common gateway interface script
CGM   Computer Graphic Metafile
CH   Clipper 5 Header
CH   OS/2 configuration file
CH3   Harvard Graphics 3.0 Chart
CH4   Charisma 4.0 Presentation
CHD   FontChameleon Font descriptor
CHF   pcAnywhere remote control file
CHI   ChiWriter Document
CHK   WordPerfect for Windows Temporary file
CHK   File fragments saved by Windows Disk Defragmenter or ScanDisk
CHL   Configuration History Log
CHM   Compiled HTML file
CHN   Ethnograph Data file
CHP   Ventura Publisher Chapter file
CHR   Character Sets (Font file)
CHT   Harvard Graphics Vector file
CHT   ChartMaster dBase Interface file
CHT   ChartViewer file
CIF   Easy CD Creator image
CIF   pcAnywhere caller file
CIF   CalTech Intermediate Graphic
CIL   Clip Gallery download package file
CIM   Sim City 2000 file
CIN   OS/2 change control file that tracks changes to an INI file
CIX   TCU Turbo C Utilities Database Index
CK1   iD/Apogee Commander Keen 1 data
CK2   iD/Apogee Commander Keen 2 data
CK3   iD/Apogee Commander Keen 3 data
CK4   iD/Apogee Commander Keen 4 data
CK5   iD/Apogee Commander Keen 5 data
CK6   iD/Apogee Commander Keen 6 data
CKB   Borland C++ Keyboard mapping file
CKF   Casio Keyboard File
CL   Generic LISP Source code
CL3   Layout file (Adaptec Easy CD Creator)
CLASS   Java class
CLC   TI-83 Plus Flash Debugger file
CLG   Disk Catalog database
CLL   Cricket Software Clicker File
CLO   Cloe Image
CLP   Quattro Pro Clip art
CLP   Clipper 5 Compiler Script
CLP   Windows Clipboard
CLR   PhotStyler Color defintion
CLR   1st Reader Binary color screen image
CLS   C++ Class Definition
CLS   Visual Basic Class Module
CLX   Macro ToolsWorks Macro file
CLX   Rational XDE file
CLX   Adobe file
CM   Craftman Data
CMA   Database file in plain text format (APPLIX TM1)
CMD   DOS CP/M command file
CMD   dBase-II program file
CMD   1st Reader External Command Menu
CMD   Command file for Windows NT (similar to a DOS .BAT file), OS/2
CMF   Corel Metafile
CMG   Chessmaster saved game
CMK   Card Shop Plus file
CMM   CEnvi Batch file
CMP   Address document
CMP   CorelDRAW 4.0 Postscript Printer Header
CMP   Route 66 Address Document
CMP   Microsoft Word for DOS User dictionary
CMP   JPEG Bitmap
CMR   MediaPlayer Movie
CMV   Corel Move animation
CMX   Corel Presentation Exchange image
CMYK   Raw cyan, magenta, yellow, and black bytes file
CNC   CNC General Program data
CNF   Configuration file used by Telnet, Windows, and other applications with varying internal formats
CNM   Windows application menu options and setup file
CNQ   Compuworks Design Shop file
CNT   Windows (or other) system content files for the help index and other purposes
CNV   WordPerfect for Windows Temporary file
CNV   Conversion files (WS_FTP Pro) files that will be converted from (Example) "HTML-"HTM" for upload
CNV   Word for Windows Data conversion support file
COB   COBOL Source code
COB   trueSpace 2 object
COD   FORTRAN Compiled code
COD   dBase Application Generator Template source file
COD   Video Text file
COD   Microsoft C compiler output as displayable machine language/assembler with original C as comments
COE   Xilinx coefficient
COL   Microsoft Multiplan Spreadsheet
COL   AutoDesk Animator Color Palette
COM   Command file (program)
CON   Simdir Configuration file
CP   CryptoPad.NET Encrypted document
CP8   CP8 256 Gray Scale image
CPD   Fax Cover document
CPD   Complaints Desk Script
CPD   Corel PrintOffice file (drawing)
CPE   Fax Cover document
CPF   The Complete Fax (Fax file)
CPF   CORDIS CPF Editor Contract Preparation Form Submission File
CPH   Image file (Corel Print House) see CPO
CPI   ColorLab Processed Image bitmap
CPI   Microsoft MS-DOS code page information
CPJ   CeQuadrant CD Project
CPL   Compel Presentation
CPL   Corel color palette
CPL   Control Panel Module
CPM   Turbo Pascal DOS file
CPO   Image file (Corel Print Office)
CPP   CA-Cricket Presents presentation
CPP   C++ Source code
CPR   Corel Presents presentation
CPS   Coloured postscript
CPS   Central Point PC Tools Backup
CPT   Macintosh Compressed Archive
CPT   dBase Encrypted Memo
CPT   CA-Cricket Presents Template
CPT   Corel Photo-Paint image
CPX   Corel Presentation Exchange compressed drawing
CPY   Data file (Copy Books)
CPZ   COMPOZ Music Text
CRC   Check file (Win-SFV32)(Fantasia Software)
CRC   Circular reference file (Pro/Engineer)
CRD   Microsoft Windows 3.x Cardfile
CRF   Zortech C++ cross-reference
CRH   Image file (Microsoft Golf)
CRP   Visual dBASE custom report
CRP   dBase IV Encrypted database
CRP   Corel Presents run-time presentation
CRS   WordPerfect 5.1 for Windows File Conversion resource
CRT   Oracle Terminal settings information
CRT   Crontab file)
CRT   Certificate file
CRU   CRUSH Compressed archive
CS1   Sinar CaptureShop raw file for Macintosh
CS16   Sinar CaptureShop raw file for Macintosh
CS4   Sinar CaptureShop raw file for Macintosh
CSA   Comma deliminated text
CSC   Corel script
CSG   Statistica/w Graph file
CSH   C shell script files (Hamilton Labs)
CSM   Script file (Kodak Dc265 Camera)
CSM   Borland C++ 4.5 Precompiled header
CSO   Customer service data and outcome file
CSP   PC Emcee On-Screen image
CSS   Statistica/w Datasheet
CSS   Cascading Style Sheet (MIME)
CSS   Stats+ Datafile
CST   Macromedia Director "Cast" (resource) file
CSV   CompuShow Adjusted EGA/VGA Palette
CSV   Comma-separated values file
CT   A graphic file associated with the Paint Shop Pro Graphic Editor
CT   Scitex CT bitmap
CTB   AutoCAD Color-dependent Plot Style Table
CTC   PC Installer Control
CTF   Symphony Character code translation
CTL   dBase IV Control
CTL   Used in general for files containing control information. FAXWorks uses it to keep information about each fax sent and received.
CTX   Pretty Good Privacy (PGP) Ciphertext file
CTX   Microsoft Online Course Text
CTX   Visual Basic User control binary file
CUE   CDRWin (and others) Description File for a CD-Image
CUE   Microsoft Cue Cards Data
CUE   ALCATech BPM Studio Cue Points
CUL   Cursor library file (IconForge)
CUR   Windows Cursor
CURSOR   Sun Microsystems Cursor
CUT   Dr Halo Bitmap
CV   Microsoft CodeView information screen
CV   Corel Versions archive
CVG   Image
CVS   Canvas drawing file
CWK   Claris Works data
CWS   Claris Works template
CXT   Macromedia Director protected (not editable) "Cast" (resource) file
CXX   C++ source code
CZIP   Encrypted Zip File
   

[manimarank]

File Extension Listing for "D":

D2D   2D/3D object file (3-D Fassade Plus)
D64   Commodore 64 emulator disk image
DAA   PowerISO Direct-Access-Archive
DAF   Digital Anchor data file, a secure database file for the Digital Anchor Database Engine
DAO   Windows Registry Backup
DAP   Data access page (Microsoft Access 2000)
DAR   DVD Architect File
DAT   A data file extension used to designate an error message in a inbound internet email message (Microsoft Exchange Server v 5.0)
DAT   WordPerfect Merge Data
DAT   Extension used for some MPEG files
DAT   Yahoo Messenger archive file
DAT   Data file
DB   Borderland's Paradox 7 table database
DBC   Microsoft's Visual FoxPro database container file
DBF   Enable database (can be opened with Excel 97)
DBF   Oracle 8.1.x tablespace file
DBF   A dBASE file, a format originated by Ashton-Tate, but understood by Act!, Clipper,FoxPro, Arago, Wordtech, xBase, and similar database ordatabase-related products.
DBK   Schematic backup file (Orcad Schematic Capture)
DBK   dBase Database Backup
DBO   Compiled program file (dBase IV)
DBQ   Paradox Memo
DBS   Microsoft Word printer description file
DBS   PRODAS data file
DBS   SQL Windows database
DBS   Managing Your Money data file
DBT   dBase Text Memo
DBV   Memo field file (Flexfile 2)
DBW   Microsoft Windows 9.x Database file (DataBoss)
DBX   Outlook Express mail folder
DBX   Microsoft's Visual FoxPro Table file
DBX   DataBeam image
DC   CAD file (DesignCAD)
DC2   CAD file (DesignCAD)
DC5   DataCAD Drawing
DCA   Visual Basic Active designer cache
DCA   Document Content Architecture Text file (IBM DisplayWrite)
DCF   Data file (Dyadic)
DCF   Disk Image file
DCIM   Digital Imaging and Communications in Medicine (image and data)
DCL   AutoCAD Dialog Control Language Description file
DCM   DCM module
DCP   Data CodePage (OS/2)
DCR   Shockwave file
DCS   Bitmap Graphics (Quark XPress)
DCS   Datafile (ACT! Activity file)
DCS   Desktop Color Separation file
DCT   Database Dictionary file (Clarion Database Developer)
DCT   Database SpellCheck Dictionary (Harvard Graphics 3.0-Symphony)
DCT   Microsoft's Visual FoxPro database container file
DCU   Delphi compiled unit
DCX   Fax image (based on PCX)
DCX   Macro file
DCX   Bitmap Graphics file (Multipage PCX)
DCX   Microsoft's Visual FoxPro database container file
DD   Compressed Archive (Macintosh DISKDOUBLER)
DDB   Bitmap Graphics file
DDF   Btrieve or Xtrieve Data Definition File, which contains metadata describing a Btrieve or Xtrieve file
DDI   Image File (DISKDUPE)
DDIF   Digital Equipment or Compaq file. Used for storing images and their word processing documents
DDP   Device Driver Profile (OS/2)
DEB   Debug Script (DOS Debug)
DEF   Define Module file (3-D Fassade Plus)
DEF   C++ definition file
DEF   Assembly Header file (Geoworks)
DEF   SmartWare II data
DEFI   Oracle 7 de-install script
DEM   A file with USGS standards for Digital Elevation Models (Vista Pro)
DEM   Graphics file (Vista Pro)
DEM   Demo file (Descent)
DEP   Visual Basic Setup Wizard Dependency file
DER   Certificate file
DEV   Device Driver
DEWF   Macintosh SoundCap/SoundEdit recorded instrument file
DEZ   Encrypted zip file (DES Encryption)
DFD   Data Flow Diagram Graphic (Prosa)
DFI   Outline Font description (Digifont)
DFL   Default Program Settings (Signature)
DFM   Data Flow Diagram model (Prosa)
DFS   Sound File (Delight)
DFV   Printing Form value (Microsoft Word)
DGN   Microstation95 CAD drawing
DGN   Bentley Systems drawing file
DGS   Diagnostics Report
DH   Dependency Information file (Geoworks)
DHP   Graphic file (Dr. Halo II-III PIC Format)
DHS   Shadowgrounds Savegame File
DHT   Datafile (Gauss)
DIA   Diagraph Graphics file (Computer Support Corporation)
DIB   Device-independent bitmap
DIC   Dictionary file (Lotus Notes, Domino)
DIC   Dictionary file
DICM   Digital imaging and communications in medicine file (DICOM)
DIF   Database file (VisiCalc)
DIF   Data Interchange Output file
DIF   Text file (Output from Data Interchange Format)
DIF   Data Interchange Format spreadsheet
DIG   Sound Designer I audio
DIG   Digilink file
DIP   Graphics file
DIR   Dialing Directory (ProComm Plus)
DIR   Directory (VAX) (DEC)
DIR   Movie (MacroMind Director 4.x)
DIR   Macromedia Director file
DIS   Distribution file (VAX Mail)
DIS   Thesaurus file (CorelDraw)
DIS   Ray Tracer file
DIZ   Description file (Description in ZIP)
DJS   NASCAR Thunder game music file
DJS   Data Junction Integration map
DJVU   DjVu compressed image file
DKB   Graphics file (Ray Traced DKBTrace)
DL   Image
DLD   Datafile (Lotus 1-2-3)
DLG   C++ Dialogue Script
DLL   Export/Import Filter (CorelDraw)
DLL   Dynamic-link library file
DLS   Interactive music architecture (IMA)(Microsoft),(Blood2)
DLS   Setup file (Norton DiskLock)
DLS   Downloadable sound
DMD   Visual dBASE data module
DMF   X-Trakker music module (MOD)
DMF   Packed Amiga disk image
DMG   Macintosh disk image file (copy of contents of a hard disk or CD)
DMO   Demo file (Derive)
DMP   Dump file (Screen or Memory)
DMS   Compressed Archive (Amiga DISKMASHER)
DOB   Visual Basic User document
DOC   WordStar document
DOC   WordPerfect document
DOC   Microsoft Word document
DOC   DisplayWrite document
DOC   Document format (Interleaf)
DOC   FrameMaker or FrameBuilder document
DOCX - File Format   Microsoft Word 2007 document file
DOG   Screen Saver file (Laughing Dog Screen Saver)
DOH   Dependency Information file (Geoworks)
DOS   Network Driver file (PKT_DIS.dos)
DOS   Text file (DOS)
DOS   External Command file (1st Reader)
DOT   Line-Type definition (CorelDraw)
DOT   Word Document Template (Microsoft Word for Windows)
DOX   Text file (MultiMate 4.x)
DOX   User document binary form (Visual Basic)
DOZ   Description out of Zip (VENDINFO)
DP   Datafile (DataPhile)
DP   Calendar file (Daily Planner)
DPL   Borland Delphi 3 packed library
DPR   Project header (Borland C++)
DPT   Publication file (Publish-It!)
DR9   Directory file
DRA   Dragon NaturallySpeaking file
DRAW   Acorn's object-based vector image
DRC   Design rules check report file (Orcad Schematic Capture)
DRG   Motion Software Dyno2000 Car Design
DRG   VLBI and Tied Array Drudge Tasking Document
DRG   AllyCAD file
DRS   Display Resource file (WordPerfect for Windows)
DRV   Device Driver (Required to make a device function)
DRV   Driver
DRW   Lotus Freelance image
DRW   Micrografx vector graphics file
DRW   Pro/E drawing
DRW   Caddie CAD drawing
DS4   Vector Graphics (Micrografx)
DS4   Micrografx Designer Image
DSC   Discard file (Oracle)
DSD   Database file (DataShaper)
DSF   Micrografx Designer v7.x file
DSG   DooM saved game
DSK   Driver file (Novell Netware)
DSK   Project Desktop file (Borland C++/Turbo Pascal)
DSM   Digital Sound Module (DSI)
DSM   Music module file (DSIK)
DSM   Dynamic Studio music module (MOD)
DSN   Design (Object System Designer)
DSN   Schematic file (Orcad Schematic Capture)
DSN   ODBC Data source
DSP   Display parameters (Signature)
DSP   Graphics Display driver Dr. Halo)
DSP   Microsoft Developer Studio project
DSQ   Corel QUERY
DSR   Driver Resource (WordPerfect for Windows)
DSR   Visual Basic Active designer file
DSS   Digital Sound file (Digital Soup))
DSS   Screensaver file (DCC)
DST   Distribution file (PC-RDist, by Pyzzo)
DST   Embroidery machines graphic file
DSW   Microsoft Developer Studio workspace file
DSW   Desktop settings (Borland C++ 4.5)
DSX   Visual Basic Active designer binary file
DT_   Data file fork (Macintosh)
DTA   Datafile (Turbo C++)
DTA   World Bank's STARS data
DTD   |SGML Document Type Definition (DTD) file
DTED   Digital terrain elevation data (geographic data format)
DTF   Symantec Q&A relational database
DTF   Database file (PFS-Questions & Answers)
DTM   Module file (DigiTrakker)
DTP   Text Document (Timeworks Publisher 3.x)
DTP   Template file (Pressworks)
DTP   Desktop layout file (SecurDesk!/SecurDesk! LV)
DUN   Microsoft Dial-up Networking Export file
DUP   Duplicate Backup
DUS   Readiris font dictionary
DV   Digital video (MIME)
DVC   Datafile (Lotus 1-2-3)
DVF   Graphics file associated with camcorders (DV Studio)
DVI   Device Independent Document (TeX) (LaTeX)
DVI   Binary file (TeX)
DVP   Device parameter file (AutoCAD)
DVP   Desqview Program information (DESQview)
DW2   Drawing file (DesignCAD for Windows)
DWC   Compressed Archive (DWC)
DWD   DiamondWare digitized file
DWF   Drawing Web file (Microsoft WHIP autoCAD reader)
DWF   Vector graphic (Autodesk)
DWG   AutoCAD drawing, or older Generic CAD drawing file
DWG   AutoCAD Drawing
DWH   Express Tools log file
DWI   Stepfile format for Dance Dance Revolution simulator
DWP   Document file (DeScribe)
DWS   Workspace file (Dyadic)
DX   Digital Electric Corporation (DEC) Data exchange file
DXB   AutoCAD Drawing Exchange Format file
DXF   Drawing Interchange Format (AutoCAD)
DXF   Data Exchange File
DXF   Drawing Interchange (eXchange) format,a text representation of the binary DWG format
DXN   Fax document (Fujitsu dexNet)
DXR   Macromedia Director protected (not editable) movie file
DYN   Datafile (Lotus 1-2-3)

[manimarank]

File Extension Listing for "E":

E00   Coverage export file (ArcInfo)
EASM   SolidWorks eDrawing Electronic Assembly Data File
EBJ   Error Checking Object file (Geoworks)
ECW   VECTOR structured graphics files
ECW   RASTER structured graphics
ED5   EDMICS image
ED6   EDMICS image
EDA   Ensoniq ASR disk image
EDB   ROOTS3 Geneological data file
EDD   Element Definition document (FrameMaker+SGML documents)
EDE   Ensoniq EPS disk image
EDK   Ensoniq KT disk image
EDQ   Ensoniq SQ1/SQ2/KS32 disk image
EDS   Ensoniq SQ80 disk image
EDT   Default settings (VAX Edt editor)
EDV   Ensoniq VFX-SD disk image
EEB   Button Bar for Equation editor (WordPerfect for Windows)
EFA   Ensoniq ASR file
EFE   Ensoniq EPS file
EFK   Ensoniq KT file
EFQ   Ensoniq SQ1/SQ2/KS32 file
EFS   Ensoniq SQ80 file
EFT   High Resolution Screen Font (ChiWriter)
EFV   Ensoniq VFX-SD file
EFX   Fax document (Efax Reader)
EFX   Fax Document (Everex EFax)
EGA   EGA Display font (Ventura Publisher)
EGM   Bentley Systems drawing file
EL   Lisp Source code (eMacs)
ELC   eMac Lisp Source code (byte-compiled)
ELM   Theme-Pack file for (Microsoft FrontPage)
ELT   Event List Text file (Prosa)
EMAIL   Microsoft Outlook Express mail message (save to desktop, scan for viruses, then convert to an EML file before opening)
EMB   Embedded bank File (Everest)
EMD   ABT Extended MoDule
EMF   Enhanced Windows Metafile
EML   Microsoft Outlook Express mail message (MIME RFC 822)
EMS   Enhanced Menu System Configuration file (PC Tools)
EMU   Terminal Emulation Data file (BITCOM)
EMZ   Windows Compressed Enhanced Metafile, a graphic format used in Office and Visio
ENC   Video file
ENC   Encoded file (UUENCODEd File, Lotus 1-2-3)
ENC   Music file (Encore)
END   Arrow-Head Definition Table (CorelDraw)
ENFF   Neutral Format
ENG   Chart Graphics file (EnerGraphics)
ENG   Dictionary Engine file (Sprint)
ENV   Environment file (WordPerfect for Windows)
ENV   Enveloper Macro (WOPR)
EPD   Publication file (Express Publisher)
EPHTML   Enhanced Perl-parsed HTML
EPI   Document file (Express Publisher)
EPRT   SolidWorkseDrawing CAD file
EPS   Printer font (Epson, Xerox, Ventura Publisher)
EPS   Encapsulated Postscript image file
EPS   Encapsulated Postscript Vector graphics (Adobe Illustrator)
EPS2   Adobe Level II Encapsulated Postscript
EPSF   Encapsulated PostScript
EPSI   Adobe Encapsulated Postscript Interchange
EQN   Equation file (WordPerfect for Windows)
ER1   ERWin file
ERD   Entity Relationship Diagram graphic file (Prosa)
ERM   Entity Relationship Diagram Model file (Prosa)
ERR   Compilation error file (Microsoft Visual FoxPro)
ERR   Stores the error messages that result when the RoboHELP Help Compiler attempts to compile the source files of a Help system
ERX   ERWin file
ESH   Extended Shell Batch file (DOS)
ESL   Distributable support library file (Microsoft Visual FoxPro)
ESPS   ESPS audio file
EST   Interactive Cost Estimating 2000 file
ESU   ESRI Single Use License Information file
ET   EasiTeach document
ETH   Document file (Ethnograph 3.x)
ETX   Structure Enhanced text (SetText)
EUI   Ensoniq ESP family compacted disk image
EVT   Event Log (Microsoft Windows NT, 2000)
EVY   Document (WordPerfect for Windows Envoy)
EWD   Text Document (Express Publisher for Windows)
EWL   Microsoft Encarta document
EX3   Device Driver file (Harvard Graphics 3.x)
EXC   Source Code file (Rexx VM/CMS)
EXC   Exclude file for Optimize (do not process, QEMM)
EXC   Microsoft Word Exclusion Dictionary file
EXE   Executable file (program)
EXP   Saved chat (ICQ)
EXT   ASCII binary transfer file (WS_FTP PRO) (IPSWITCH Software)
EXT2   Second extended file system (Linux)
EXT3   Third extended file system (Linux)
EZP   Compressed file (Edify.zip) (Edify Electronic Workforce Backup Utility)

[manimarank]

 File Extension Listing for "F":

F   Compressed file archive (FREEZE)
F   FORTRAN file
F01   Fax document (Perfect Fax)
F06   Dos screen text font (height= 6 pixels)
F07   Dos screen text font (height= 7 pixels)
F08   Dos screen text font (height= 8 pixels)
F09   Dos screen text font (height= 9 pixels)
F10   Dos screen text font (height= 10 pixels)
F11   Dos screen text font (height= 11 pixels)
F12   Dos screen text font (height= 12 pixels)
F13   Dos screen text font (height= 13 pixels)
F14   Dos screen text font (height= 14 pixels)
F15   Dos screen text font (height= 15 pixels)
F16   Dos screen text font (height= 16 pixels)
F2R   Linear music module (Farandole)
F3R   Blocked music module (Farandole)
F77   Source code file (FORTRAN 77)
F90   FORTRAN file
F96   Fax document (Frecom FAX96)
FAC   Face graphic
FAQ   Frequently Asked Questions document
FAR   Music module (MOD) (Farandole Composer)
FAS   Basic module file (3-D Fassade Plus)
FAS   AutoCAD Fastload Auto LISP file
FAV   Navigation bar (Microsoft Outlook)
FAX   FAX Type image
FBK   Backup (Navison Financials)
FC   Spell Check dictionary file (Harvard Graphics)
FCD   Virtual CD-ROM file
FCM   Binary file patch (Forward Compression)
FD   Field offsets for compiler (DataFlex)
FD   Declaration file (FORTRAN)
FDB   Database (Navison Financials)
FDF   Forms Document (Adobe Acrobat)
FDW   Document form (F3 Design and Mapping)
FEB   Button Bar for Figure Editor (WordPerfect for Windows)
FEM   CADRE Finite Element Mesh
FES   Topicscape file for fileless exports to Windows
FF   Outline Font description (AGFA CompuGraphics)
FFA   MS find fast file
FFF   GUS PnP bank file
FFF   Fax document (defFax)
FFL   Image file (PrintMaster Gold)
FFL   MS fast find file
FFO   MS fast find file
FFT   Final Form Text (part of IBM's DCA)
FFX   MS fast find file
FH3   Aldus Freehand 3 drawing (Vector graphic)
FH4   Aldus Freehand 4 drawing (Vector graphic)
FH9   Macromedia Freehand 9 graphic file
FI   File Interface (FORTRAN)
FIF   Fractal Image
FIG   REND386/AVRIL file
FIL   File List Object (dBase Application Generator)
FIL   Overlay (WordPerfect for Windows)
FIL   File template (Application Generator)
FILE   AS/400 physical file
FIN   Print formatted text (Perfect Writer)
FIT   File index table (Microsoft Windows NT)
FIT   Graphic (FITS)
FITS   Flexible Image Transport System file
FITS   CCD camera image
FIX   Patch file (Generic)
FKY   Macro (Microsoft FoxPro)
FLA   Movie (Macromedia Flash)
FLAC   Free Lossless Audio Compression file
FLB   Format library (Papyrus)
FLC   FLIC animation (AutoDesk)
FLD   Field define module file (3-D Fassade Plus)
FLD   File folder (Charisma)
FLF   License (Navison Financials)
FLF   Driver (OS/2)
FLF   Delived form (Corel Paradox)
FLI   Font library (EmTeX)
FLI   FLIC animation (AutoDesk)
FLL   Distributable dynamic link library (DLL) (Microsoft Visual FoxPro)
FLM   Film Roll (AutoCAD)
FLO   FlowCharter file (MicroGrafx)
FLP   Family Lawyer Saved Document
FLP   FlipAlbum File
FLP   Floppy Disk Image File
FLP   Fractal Explorer Fractal Landscape Project
FLP   GIFLine V1.0
FLP   Promethean ACTIVboard file
FLP   Corel Flow Project Flow Chart
FLS   Filelist document (Farrukh Imposition Publisher)
FLT   Filter (Corel)
FLT   Filter (Micrografx Picture Publisher)
FLT   Graphics filter support file (Asymetrix ToolBook)
FLT   Music module (MOD) (StarTrekker)
FLT   Open Flight file (MulitGen)
FLT   Graphics filter (Microsoft)
FLV   Macromedia Flash Video file
FLW   Kivio flowchart file
FLX   Compiled binary file (DataFlex)
FM   FrameMaker Document (Adobe)
FM   Spreadsheet (FileMaker Pro)
FM1   Spreadsheet (Lotus 1-2-3, version 2.x)
FM3   Spreadsheet (Lotus 1-2-3, version 3.x)
FM3   Device driver (Harvard Graphics, version 3.0)
FMB   File Manager button bar (WordPerfect for Windows)
FMB   Binary source code for form, (Oracle, v4.x and later)
FMF   Font or Icon (IBM LinkWay)
FMK   MakeFile (FORTRAN PowerStation)
FML   Mirror list (Oracle)
FMO   Compiled format (dBase IV)
FMP   Document file (FileMaker Pro)
FMT   Print file (Microsoft Schedule+)
FMT   Style sheet (Sprint)
FMT   Csreen format file (Microsoft Visual FoxPro)
FMT   Text format for form file (Oracle, v4.x and later)
FMX   Executable form, (Oracle,v4.x and later)
FN3   Font (Harvard Graphics)
FNC   Fixed neighbors constraint file in RMC++ application
FNC   Functions file in a neural network application
FND   Saved Search (Find applet) (Microsoft Explorer)
FNG   Font group (Font Navigator)
FNK   Module (FunkTracker)
FNT   Font (Generic)
FNX   Inactive font (Exact)
FO1   Font (Borland Turbo C)
FO2   Font (Borland Turbo C)
FOG   Fontographer font
FOL   Saved message folder (1st Reader)
FON   Call log (Procomm Plus)
FON   System font (Generic)
FON   Dialing directory (Telix)
FON   Font (Generic)
FOR   Form (WindowBase)
FOR   FORTRAN source code
FOT   Installed TrueType font (Microsoft Windows Font Installer)
FOT   Font-related file (Generic)
FP   FileMaker Pro file
FP   Configuration file (FoxPro)
FP1   "Flying Pigs" screensaver datafile (Microsoft Windows 9.x)
FP3   FileMaker Pro v.3 & 4 document file
FP5   Document file (FileMaker Pro v.5)
FPC   Catalog file (FoxPro)
FPT   Memo fields (Microsoft FoxPro)
FPT   FileMaker Pro file
FPW   Floorplan drawing (FloorPlan Plus for Windows)
FPX   Bitmap (FlashPix)
FR3   Renamed dBaseIII+ form (dBase IV)
FRF   Font (FontMonger)
FRG   Uncompiled report (dBase IV)
FRK   Zip (compressed ) file (Macintosh)
FRM   Document (FrameMaker or FrameBuilder)
FRM   Executable file (Oracle,v3.0 and earlier)
FRM   Form (Visual Basic)
FRM   Merge form (WordPerfect for Windows)
FRM   Symbol Report (DataCAD)
FRM   Form (Generic)
FRO   Compiled report (dBase IV)
FRP   Form (PerForm PRO Plus)
FRS   Screen Font Resource (WordPerfect for Windows)
FRT   Report menu (FoxPro)
FRX   Report (Microsoft FoxPro)
FRX   Form stash file (Visual Basic)
FSF   fPrint Audit Tool
FSL   Form (Paradox for Windows)
FSL   Saved form (Corel Paradox)
FSL   Paradox 7 form (Borderland)
FSM   Sample file (Farandoyle)
FST   Linkable program (dBFast)
FSX   Data (Lotus 1-2-3)
FT   Full text index (Lotus Notes)
FTB   Index file (Roots3)
FTF   Client access data specification file (AS/400) (Client to Server)
FTG   Help system full-text search group file (Microsoft Windows)
FTM   Font (MicroGrafx)
FTP   File transfer protocol (Internet Generic)
FTS   Help system full-text search index (Windows)
FTW   Document file (Family Tree Maker)
FW   Database (Framework II)
FW2   Database (Framework II)
FW3   Database (Framework III)
FW4   Database (Framework IV)
FWB   Data file backup for file splitting configuration (FileWrangler)
FWP   Microsoft FrontPage Web package (archive format for Web site content)
FWS   Data file for file splitting configuration (FileWrangler)
FX   On-Line guide (FastLynx)
FXD   Phonebook (FAXit)
FXP   Compiled source code (FoxPro)
FXS   Fax Transmit graphic (WinFax)
FZB   Bank dump file (Casio FZ-1)
FZF   Full dump file (Casio FZ-1)
FZV   Voice dump file (Casio FZ-1)

[manimarank]

File Extension Listing for "G":

G   Data chart (APPLAUSE)
G721   Raw CCITT G.721 //$bit ADPCM data
G723   Raw CCITT G.723 3 or 5bit ADPCM data
G8   Raw Graphics (one byte per pixel) Plane III (PicLab)
GAL   Album (Corel Multimedia Manager)
GAM   Fax document (GammaFax)
GB   Emulator ROM image file (Nintendo GameBoy)
GBC   Color emulator ROM image file (Nintendo GameBoy)
GBL   Global file
GBL   Global definitions (VAXTPU Editor)
GBM   Genie Backup Manager file
GC1   Lisp source code (Golden Common Lisp 1.1)
GC3   Lisp source code (Golden Common Lisp 1.1)
GCD   Generic (TM) CADD drawing (later versions)
GCP   Image processing file (Ground Control Point)
GDB   Database file (InterBase)
GDF   Dictionary file (GEOS)
GDM   Bells, whistles, and sound boards module
GED   Graphic Environment Document (drawing)
GED   Graphics editor file (EnerGraphics)
GED   Genealogical data (GEDCOM)
GEM   Vector graphics (Ventura Publisher)
GEM   Metafile (GEM)
GEN   Compiled template (dBase Application Generator)
GEN   Generated text (Ventura Publisher)
GEO   Geode (Geoworks)
GetRight   Unfinished-Download (GetRight)
GFB   Compressed gif image (GIFBLAST)
GFI   Graphics Link presentation (Genigraphics)
GFT   Font (NeoPaint)
GFX   Genigraphics Graphics Link presentation
GHO   Symantec ghost image file
GHS   Symantec ghost segment file (automatically spanning files over 2 GB in size)
GIB   Chart (Graph-in-the-Box)
GID   Windows 95 global index (containing help status)
GIF   Bitmap (CompuServe)
GIM   Graphics Link presentation (Genigraphics)
GIW   Presentation (Graph-in-the-Box for Windows)
GIX   Graphics Link presentation (Genigraphics)
GKH   Ensoniq EPS family disk image
GKS   GripKey document (Gravis)
GL   Animation file (GRASP graphical System for Presentation)
GLB   Microsoft Exchange Server resynchronization file
GLB   Textured 3-D scene file format
GLM   Datafile (Glim)
GLS   Datafile (Across)
GLY   Glossary (Microsoft Word)
GMF   CGM Graphics (APPLAUSE)
GMP   Tile map (Geomorph) (SPX)
GMP   Majesty Savegame File
GMR   Graphical monitor record (Schlafhorst Automation)
GNA   Graphics Link presentation (Genigraphics)
GNO   Genealogy document file (Genopro)
GNT   Generated executable code (Micro Focus)
GNX   Graphics Link presentation (Genigraphics)
GOC   Goc sorce code (Geoworks)
GOH   Goc header (Geoworks)
GP   Geode parameter file (Geoworks Glue)
GP3   Guitar Pro 3 file
GPH   Graph (Lotus 1-2-3/G)
GPK   Program package (Omnigo)
GPP   Graph paper application file (GraphPap) (Generates graph paper)
GR2   Screen driver (Microsoft Windows 3.x)
GRA   Datafile (SigmaPlot)
GRA   Graph (Microsoft)
GRB   Shell Monitor (MS-DOS v5.0)
GRD   Image processing grid (CHIPS)
GRF   Graph (Charisma Graph Plus)
GRF   Grapher (Golden Software) graph
GRM   VISUAL EPR Input Data for FIntGraf
GRM   Minos File
GRP   Pictures group (PixBase)
GRP   Program Manager Group (Microsoft)
GRY   Raw graphic (GREY)
GS1   Presentation (GraphShow)
GSD   Vector graphic (Professional Draw)
GSM   Audio stream Raw 'byte aligned (GSM 6.10 audio stream)
GSM   GSM w.o. header/VoiceGuide/RapidComm file (US Robotics voice modems)
GSM   GSM w. header/QuickLink file (US Robotics voice modems)
GSM   Audio stream Raw GSM (6.10 audio stream)
GSP   Zip file (Gnuzip) (Allows for output to html)
GSP   Sketch pad file (GeoMeter Sketch Pad)
GSW   Worksheet (GraphShow)
GT2   Music module (Graoumftracker) (new) (MOD)
GTH   IBM Gatherer file
GTH   Lotus Domino document manager file
GTK   Music module (Graoumftracker) (old) (MOD)
GUP   Data (PopMail)
GVL   RCL Software Gravel (astronomy simulator) file
GVP   Google Video Pointer
GWI   Novell GroupWise file
GWP   Greetings WorkShop (now Microsoft Picture It) file
GWX   Graphics Link presentation (Genigraphics)
GWZ   Graphics Link presentation (Genigraphics)
GXL   Graphics library (Genus)
GZ   Compressed file (Unix gzip)

[manimarank]

 File Extension Listing for "H":

H   Program header (C)
H--   Header file (Sphinx C--)
H!   On-line Help (Flambeaux Help!)
H++   Header file (C++)
HA   Compressed archive (HA)
HAM   Vector graphics saved file (Amiga)
HAM   Driver file (Novell Netware)
HAP   Compressed archive (HA)
HBI   Handy Backup file
HBK   Accounting data file (Humanic Software)
HBK   Handbook (MathCad)
HCM   Configuration file (IBM HCM)
HCOM   Sound Tools file (HCOM)
HCR   Production configuration file (IBM HCD/HCM)
HCVM - File Format   Hypercosm's Teleporter file for navigable 3D models
HDF   Help file (Help development kit)
HDF   Hierarchical Data Format file
HDF   Amiga Hardfile Image
HDF   Procomm Plus Alternate Download file listing
HDF   National Center for Supercomputing Applications (NCSA) Geospatial Hierarchical Data
HDL   Alternate download listing (ProComm Plus)
HDR   Datafile (Egret)
HDR   Message header text (ProComm Plus)
HDR   Message header text (1st Reader)
HDR   Database header (Pc-File+)
HDW   Vector graphics (Harvard Draw)
HDX   Help index (Zortech C++)
HDX   Help index (AutoCAD)
HED   Document (HighEdit)
HEL   Hellbender saved game (Microsoft)
HEX   Macintosh BinHex 2.0 file
HFI   HP font info (GEM)
HGL   Drawing file (HP Graphics Language)
HH   Header file (C++)
HH   Help system map (Generic)
HHH   Precompiled header (Power C)
HHP   Help information for remote users (ProComm Plus)
HIT   Audio file (HitPlayer)
HLB   Help library (VAX)
HLP   Windows Help file (DataCAD)
HLP   Help file (Generic)
HMI   Human machine interfaces MIDI music file (Descent)
HMM   Alternate mail read option menu (ProComm Plus)
HMP   Human machine interfaces MIDI music file (Descent)
HNC   Program files (CNC)
HOG   Mission file (Descent 1-2)
HOG   Main data package file (Descent3)
HOG   Lucas Arts Dark Forces WAD file
HOT   Document file (HotSend)
HP8   Ascii text Roman8 character set (NewWave Write)
HPC   Font language file (Hewlett-Packard)
HPF   Partial download file (HotLine)
HPF   HP LaserJet font (Adobe Pagemaker)
HPG   HPGL Plotter vector graphics (Harvard Graphics)
HPG   HPGL Plotter vector graphics (AutoCAD)
HPI   Font information (GEM)
HPJ   Help Project file (Visual Basic)
HPK   Compressed archive (HPACK)
HPM   Alternative menu for privileged users (ProComm Plus)
HPM   Emm text (HP NewWave)
HPP   Header file (Zortech C++)
HPP   Program header (C++)
HQX   BinHex (Macintosh 4.0)
HRF   Rastor graphic (Hitachi)
HRM   Alternate menu for limited users (ProComm Plus)
HS2   Monochrome image (Postering)
HSC   FM synthesized music file (Used by many old games, e.g.:FINTRIS, ROL)
HSI   Graphic (Handmade Software, Inc.)
HST   History file (ProComm Plus)
HST   History file (Generic)
HT   HyperTerminal file
HTA   A HTML file that has been used to by viruses to update the system registry
HTC   HTML Component
HTM   A Web page (a file containing Hypertext Markup Language - HTML - markup)
HTML   A Web page (a file containing Hypertext Markup Language - HTML - markup)
HTT   Hypertext template (Microsoft)
HTX   Template (Extended HTML)
HWD   Presentation (Hollywood)
HWP   Korean word processor document format (HanGul)
HXM   Alternate protocal selection menu (ProComm Plus)
HXM   HAM extension (Descent2)
HXX   Header file (C++)
HY1   Hyphenation algorythm (Ventura Publisher)
HY2   Hyphenation algorythm (Ventura Publisher)
HYC   Datafile (WordPerfect for Windows)
HYD   Hyphenation dictionary (WordPerfect for Windows)
HYM   3D Image binary file (Hymarc Scandata Scanner)
HYP   Compressed archive (HYPER)
   

[manimarank]

File Extension Listing for "I":

I   Intermediate file (Borland C++)
I00   WinShrink File (I-zero-zero. Usually followed with 1 or more .i0x files, and .md5 file)
IAN   Text file (Sterling Software) (Groundworks COOL Business Team Model)
IAX   Bitmap (IBM Image Acess eXecutive)
IBM   Compressed archive (ARCHDOS, IBM Internal only)
ICA   Bitmap graphic (Image Object Content Architecture)
ICA   Citrix file
ICB   Targa bitmap
ICC   Catalog file (IronClad)
ICC   Printer file (Kodak)
ICD   Drawing file (IronClad)
ICL   Icon Library (Generic industry standard)
ICM   Image Color Matching profile
ICN   Icon source code
ICO   Icon (Microsoft Windows 3.x)
ICS   Scene file (IronClad)
ID   Disk identification file (Generic)
IDB   Intermediate file (Microsoft Developer)
IDD   MIDI Instrument Definition
IDE   Project file (Borland C++ v4.5)
IDF   MIDI Instrument Definition (Windows 95 required file)
IDIF   Identification file (Netscape saved address book)
IDL   OMG Interface Definition Language (IDL) file
IDQ   Cognos Impromptu Query Definition
IDW   Vector graphic (IntelliDraw)
IDX   Microsoft Outlook Express file
IDX   Index file (Microsoft Clip Gallery v. 1.x)
IDX   Index file (Pro/Engineer)
IDX   Relational database index (Microsoft FoxPro)
IFD   Adobe Output Designer forms definition source file
IFD   Form (JetForm Design)
IFF   Image (Sun TAAC/SDSC Image Tool)
IFF   Interchange file, (general purpose data storage format))
IFO   Graphic object layer data (ImageForge Pro)
IFO   Digital Video Disk (DVD) datafile
IFP   Script file (KnowledgeMan)
IFS   System file (OS/2)
IFS   Create executable library (ImageForge/ImageForge Pro)
IFS   Compressed fractal image (Yuvpak)
IGES   Initial Graphics Exchange Specification (Generic)
IGF   Metafile (Inset Systems)
IIF   Interchange file (QuickBooks for Windows)
IIM   Music module
ILB   Datafile (Scream Tracker)
ILBM   Bitmap (graphic image)
ILK   Program outline (Microsoft ILink incremental linker)
IM8   Raster graphic (Sun Microsystems)
IMA   Vector graphic (EGO,Chart)
IMA   Image (WinImage)
IMF   MIDI music file (Corridor 7, Blake Stone, Wolfenstein 3D, Spear of Destiny)
IMG   Bitmap graphic (Ventura Publisher)
IMG   Image (GEM)
IMP   Spreadsheet (Lotus Improv)
IMQ   Image presentation (ImageQ)
IMR   Cognos Impromptu report
IMS   Create executable library data (IconForge)
IN$   Installation file (HP NewWave)
IN3   Input device driver (Harvard Graphics v3.0)
INB   Test script (Vermont High Test)
INC   Include file (Assembler language or Active Server)
IND   Shared Database file (Specifically in Microsoft Windows)
IND   Index (dBase IV)
INDD   Adobe InDesign document
INF   Type I LaserJet font information file
INF   Install script (Generic)
INF   Information file (Generic)
INI   Setup file (MWave DSP synth's mwsynth.ini GM)
INI   Bank setup file (Gravis UltraSound)
INI   Initialization file (Generic)
INK   Pantone reference fills file (CorelDRAW)
INL   Inline function file (Microsoft Visual C++)
INP   Source code for form, (Oracle,version 3.0 and earlier)
INRS   INRS-Telecommunications audio
INS   Install script (InstallShield)
INS   Sign-up file (X-Internet)
INS   Instrument file (Ensoniq EPS Family)
INS   Sample (Cell/II MAC/PC instruments)
INS   Datafile (WordPerfect for Windows)
INS   Installation script (1st Reader)
INS   Instrument music file (Adlib)
INS   Inspiration file
INT   Interfaced units (Borland)
INT   Intermediate executable code (Produced when a source program is syntax-checked)
INX   Index file (Foxbase)
IO   Compressed archive (CPIO)
IOB   3D graphics database (TDDD format)
IOC   Organizational chart (Instant ORGcharting!)
IOF   Findit document (Microsoft Findit)
ION   File description (4dos descript.ion)
IPL   Pantone Spot reference pallette (CorelDRAW)
IPS   International patching system binary patch file
IQY   Internet inquiry (Microsoft)
IRS   Resource file (WordPerfect for Windows)
ISD   Spell checker dictionary (RapidFile)
ISH   Compressed archive (ISH)
ISO   ISO (International Standards Organization table, aka: ISO)
ISO   Lists the files on a CD-ROM; based on the ISO 9660 CD-ROM file system standard
ISP   Sign-up file(X-Internet)
IST   Instrument file (Digitaltracker)
ISU   Uninstall script (InstallShield)
IT   Music module (MOD) (Impulse Tracker)
IT   Settings file (intalk)
ITF   Interface file (JPI Pascal TopSpeed)
ITI   Instrument file (Impulse Tracker)
ITS   Internet document set (possibly a Microsoft file)
ITS   Sample file (Impulse Tracker)
IUD   Oratcl applications IUD Maker file
IV   Open Inventor file
IVD   Microdata dimension or variable-level file (Beyond 20/20)
IVP   User subset profile (Beyond 20/20)
IVT   Table or aggregate data (Beyond 20/20)
IVX   Microdata directory (Beyond 20/20)
IW   Presentation flowchart (IconAuthor-HSC Interactive)
IW   Screensaver (Idlewild)
IWA   Text file (IBM Writing Assistant)
IWC   Install Watch document
IWM   Start file (IconAuthor)
IWP   Text file (Wang)
IZT   Binary token file (IZT)

[manimarank]

File Extension Listing for "J":

J62   Ricoh camera format file
JAD   Java Application Descriptor file
JAR   Java ARchive (a compressed file containing a package of Java application-related files)
JAS   Graphic (Generic)
JAVA   Source code (Java)
JBD   Datafile (SigmaScan)
JBF   Image browser file (Paint Shop Pro)
JBX   Project file (Project Scheduler 4.0)
JCP   Java Community Process file
JCW   Java Callable Wrapper file
JDF   Job Description File (proposed XML-based standard for end-to-end job ticket specification)
JFF   JPEG image
JFIF   JPEG image
JIF   JPEG image
JMG   Laservision projection graphics file
JMP   Discovery chart-to-statistics (SAS JMP)
JN1   Jill of the Jungle data (Epic MegaGames)
JNB   Workbook file (Sigma Plot 5)
JNT   Microsoft Windows Journal notes
JOB   Vector graphics file created by conversion of a IMG file (QuestVision)
JOR   Journal (Microsoft SQL Server)
JOU   Journal backup (VAX Edt editor)
JPC   Graphic (Japan PIC)
JPE   JPEG image
JPEG   JPEG compressed bitmap
JPG   JPEG bitmap
JPG2   JPEG 2000 image (bitmap) file
JS   JavaScript source code
JSD   Jet Suite document (eFAX)
JSM   Gray Design Associates Jigsaws Galore Jigsaw File
JSM   Steamboat Software Jig ShapeMap
JSM   Freedom Scientific JAWS for Windows Script Message File
JSP   A HTML page containing a reference to a Java servlet
JTF   Fax document (Hayes JT Fax)
JTF   Bitmap graphic (JPEG Tagged Interchange Format)
JTF   JPEG bitmap
JTK   Java ToolKit file (Sun Microsystems)
JTP   Windows Journal templates
JW   Text document (JustWrite)
JWL   Library (JustWrite)
JXX   C++ Header File
JZZ   Spreadsheet (Jazz)

[manimarank]

File Extension Listing for "K":

K25   Sample file (Kurzweil 2500)
KAR   MIDI file (text+MIDI) (Karaoke)
KB   Program source code (Knowledge Pro)
KB   Keyboard script (Borland C++ 4.5)
KBD   Keyboard mapping script (Procomm Plus, LocoScript, Signature)
KBM   Keyboard mapping script (Reflection 4.0)
KCL   Lisp source code (Kyoto Common Lisp)
KDC   Image (Kodak Photo-Enhancer)
KEX   Macro (KEDIT)
KEY   Datafile (Forecast Pro)
KEY   Keyboard Macro
KEY   Security file (Such as a software registration number)
KEY   Icon toolbar (DataCAD)
KFX   Image (KoFax Group 4)
KIZ   Digital postcard (Kodak)
KKW   Contains all K-keywords in the RoboHELP Help project Index Designer not associated with topics
KMD   Knowledge model, data
KML   Google Earth Placemark file
KML   Emu48 Emulator Keyboard Configuration File
KMP   KeyMaP (Korg Trinity)
KMS   Knowledge model, shortcut
KMV   Knowledge model, visual
KMZ   Google Earth Saved Working Session file
KOS   MicroType Pro document
KPL   Kids Programming Language
KPP   Toolpad (SmartPad)
KPS   Bitmap graphic (IBM KIPS)
KQP   Native Camera file (Konica)
KR1   Sample (multi-floppy) file (Kurzweil 2000)
KRZ   Sample file (Kurzweil 2000)
KSF   Stepfile format of several Pump It Up simulators
KSF   Sample File (Korg Trinity)
KYB   Keyboard mapping (FTP)
KYE   Game data (Kye)

[manimarank]

File Extension Listing for "L":

L   Source code (Lisp)
L   Linker directive file (WATCOM wlink)
L   Source code (Lex)
LAB   Label file (Visual dBase)
LAB   Mailing labels (Microsoft Excel)
LAB   Datafile (NCSS-SOLO)
LAN   Loadable module (LAN DLL) (NetWare)
LAY   Clipart file (Printmaster Gold)
LAY   Word Chart layout (APPLAUSE)
LBG   Label generator data (dBase IV)
LBL   Label (Clipper 5)
LBL   Label (dBFast)
LBL   Label (dBase IV)
LBM   Linear Bitmap graphics (XLib)
LBM   Bitmap (DeluxePaint)
LBO   Compiled label (dBase IV)
LBR   Display driver (Lotus 1-2-3)
LBR   Compressed archive (LU)
LBT   Labels (Microsoft FoxPro)
LBX   Labels (Microsoft FoxPro)
LCF   Linker control file (Norton Guides compiler)
LCH   Used in a program (unknown) that monitors a network's response time
LCK   Lockfile (Paradox)
LCL   Datafile (FTP)
LCN   Lection document (WordPerfect for Windows)
LCS   Data History file (ACT!)
LCW   Spreadsheet (Lucid 3-D)
LD   Long distance area codes file (Telix)
LD1   Overlay file (dBase)
LDB   Lock file (Microsoft Access)
LDF   Library definition file (Geoworks Glue)
LDIF   Structured text file used for sharing information between E-Mail clients (Microsoft, Netscape and others)
LDL   Library (Corel Paradox)
LDS   LOUDNESS Sound System File
LEG   Legacy document
LEMON - File Format   Renamed RAR compressed archive file, opens with WinRAR (password: www.lemonshare.net)
LES   System game profiles (same as REG file) (Logitec Entertainment)
LET   Genesis 2000 mortgage application file
LET   Letter (generic)
LET   Unknown photo image
LET   Broderbund CreataCard Letterhead file
LEV   Level file (NetHack 3.x)
LEX   Dictionary file (Generic)
LFD   Data resource file (LucasArts Dark Forces)
LFP   LaserForms Plus file (Evergreen)
LFT   Laser printer font (ChiWriter)
LFT   Loft file (3-D Studios) (DOS)
LG   Logo procedure definition (LSRHS Logo)
LGC   Application log file
LGD   Application log file
LGO   Header and footer logo (SuperFax)
LGO   Startup logo (Microsoft Windows 3.x-9.x)
LGO   Logo file (PaintBrush)
LHA   Compressed Archive (LHA/LHARC)
LHA   Alternate file suffix for LZH
LHW   Compressed Amiga archive (LHWARP)
LIB   Library file (Generic)
LIF   Compressed archive (Generic)
LIF   Logical Interchange data (Hewlett-Packard)
LIM   Compressed archive (LIMIT)
LIN   Interactive music sequencing data file (Electronic Arts)
LIN   Line type file (DataCad)
LIS   Listing (VAX)
LIS   Output file produced by a Structured Query Reporting (SQR) program
LIT   eBook file for Microsoft Reader
LIX   Logos library system file
LJ   Text file (Hewlett-Packard LaseJet II printer)
LK   Database file (OpenSight-16 bit)
LKO   Linked object (Microsoft Outlook Express Junkmail file)
LL3   Document file (LapLink III)
LLX   Exchange agent (Laplink)
LNK   Linker response file (RTLink)
LNK   Datafile (Revelation)
LNK   Shortcut file (Microsoft Windows 9.x)
LNT   LiveNote Transcript file
LOD   Load file (Generic)
LOG   Log file (Generic)
LOK   Compressed file (FileWrangler)
LP   A document reader used for downloading mortgage closing information (DesertDocs)
LPC   Printer driver (TEKO)
LPD   Helix Nuts and Bolts file
LPI   Information file for laser printers (common with some scanning sofware)
LRC   Video phone file (Intel)
LRC   Lyrics file used by music game emulators
LRF   Linker response file (Microsoft C/C++)
LRS   Language resource file (WordPerfect for Windows)
LSF   Logos library system file
LSL   Script library (Lotus)
LSL   Saved library (Corel Paradox)
LSP   AutoLISP, CommonLISP, and other LISP language files
LSS   Spreadsheet (Legato)
LST   Keyboard macro (1st Reader)
LST   SAS text output
LST   Spool file (Oracle)
LST   List file (Generic)
LTM   Form (Lotus Forms)
LU   Library unit file (ThoughtWing)
LVL   Miner Descent/D2 Level extension (Parallax Software)
LWA   Lightwave Scene (version 6 and up)
LWD   Text document (LotusWorks)
LWF   Wavelet graphics file (Luratech)
LWLO   Layered Object file (Lightwave)
LWO   Lightwave Object (version 6 and up)
LWOB   Object file (Lightwave)
LWP   Wordpro 96/97 file (Lotus)
LWSC   Scene file (Lightwave)
LWZ   Linguistically enhanced sound file (Microsoft)
LYR   Layer file (DataCAD)
LZD   Difference file for binaries (Ldiff 1.20)
LZH   Compressed archive (LH ARC)
LZS   Data file (Skyroads)
LZS   Compressed archive (LARC)
LZW   Compressed Amiga archive (LHWARP)
LZX   Compressed archive (Generic)

[manimarank]

File Extension Listing for "M":

M   Macro module (Brief)
M   Standard package (Mathematica)
M   Program file (Matlab)
M_U   Hard Drive Boot sector backup (MazeGold)
M11   Text file (MASS11)
M1U   Pocket TV (PDA) file
M1V   MPEG-related file (MIME type 'mpeg')
M2P   Canopus MPEG-2 video file
M3   source code file (Modula 3)
M3D   3D animation (Corel Motion)
M3U   MPEG URL (MIME audio file) (MP3 Playlist)
M4   M4 Preprocessor file (Unix)
M4A   Protected AAC audio file (possibly from iTunes Music Store)
M4A   Unprotected AAC audio file
M4B   MPEG-4 Audio Layer Bookmarkable File
M4P   MPEG-4 Video File
M4V - File Format   MPEG-4 Video File
MA3   Macro (Harvard Graphics 3.0)
MAC   Macro (Generic)
MAC   Image (MacPaint)
MAD   Module (Microsoft Access)
MAF   Form (Microsoft Access)
MAG   MAG graphics format created by Woody Lynn (MPS Magro Paint System)
MAG   A graphics format found in some Japanese files
MAGIC   Configuration file (Magic Mail Monitor)
MAI   Mail (VAX)
MAK   Makefile (Generic)
MAK   Project (Visual Basic or Microsoft C++)
MAM   Macro (Microsoft Access)
MAN   Command module (Unix)
MAN   Manual page output (Unix)
MAP   WAD game file (Duke Nukem 3D)
MAP   Color pallette (Generic)
MAP   Format data (Micrografx Picture Publisher)
MAP   Linker map file
MAP   Map file used for color choices (Pro/Engineer)
MAP   Map file (Atlas MapMaker)
MAP   Network map (AccView)
MAP   Map file (Generic)
MAQ   Query (Microsoft Access)
MAR   Assembly program (VAX Macro)
MAR   Report (Microsoft Access)
MAS   Graphics file (Lotus Freelance Smartmaster)
MAT   Table (Microsoft Access)
MAT   Binary file (Matlab)
MAUD   Sample format (Maud)
MAX   Document (Paperport)
MAX   Layout file (OrCad)
MAX   Source code (MAX)
MAX   3D scene (Kinetix 3D Studio Max)
MAZ   A format use by Division's dVS/dVISE
MAZ   Maze data file (Hover)
MB   Memo field values for database (Paradox)
MB1   Data file (Apogee Monster Bash)
MBK   Multiple index archive (dBase IV)
MBOX   Mailbox file (Berkeley Unix)
MBX   Extension Microsoft Outlook adds to saved email, Eudora mailboxes
MCC   Configuration file (MathCad)
MCC   Calling card (Dialer10)
MCD   Document (MathCad)
MCF   Magic control file
MCF   Font file (MathCad)
MCI   Command script (Media Control Interface)
MCP   Application script (Capsule)
MCP   Printer driver (MathCad)
MCP   Project file (Metrowerks CodeWarrior)
MCR   Keyboard macro file (DataCad)
MCW   Text document (MacWrite II)
MCW   Document (Microsoft Word for Macintosh)
MD   Compressed archive (MDCD)
MDA   Workgroup (Microsoft Access version 2)
MDA   Add-in file (Microsoft Access)
MDB   Database (Microsoft Access)
MDE   MDE file (Microsoft Access)
MDF   Adobe Output Designer and Central Pro Server Compiled Forms Definition
MDI   Office Document Imaging file
MDI   Microsoft Digital Imaging Format file
MDI   MIDIsequention Sound file
MDI   Borland Multiple Document Interface file
MDL   Music module (MOD) (Digital Trakker)
MDL   Model (3D Design Plus)
MDL   Model file (Quake)
MDL   Model file element (Rational Rose)
MDL   Spreadsheet (CA-Compete!)
MDM   Modem definition (Telix)
MDN   Blank database template (Microsoft Access)
MDT   Add-in file (Data) (Microsoft Access)
MDT   Data table (Microsoft ILink incremental linker)
MDW   Workgroup (Microsoft Access)
MDX   Multiple index file (dBase IV)
MDZ   Wizard template (Microsoft Access)
ME   ASCII text document (Generic)
MEB   Macro editor bottom overflow library (WordPerfect for Windows)
MED   Macro editor delete save file (WordPerfect for Windows)
MED   Music module (MOD) (OctaMed Music Editor)
MEM   Memory variable save file (Clipper)
MEM   Memory variable save file (dBase IV)
MEM   Memory variable save file (Microsoft FoxPro)
MEM   Macro editor macro (WordPerfect for Windows)
MEQ   Macro editor print queue file (WordPerfect for Windows Library)
MER   Macro editor resident area (WordPerfect for Windows Library)
MER   Format for interchanging spreadsheet/database data; recognized by Filemaker, Excel, and others
MES   Message file (Generic)
MES   Macro editor workspace file (WordPerfect for Windows)
MET   Macro editor top overflow file (WordPerfect for Windows Library)
MET   Document file (OmniPage Pro)
MET   Presentation Manager metafile
MEU   Menu group (DOS Shell)
MEX   Macro editor expound file (WordPerfect for Windows)
MEX   Executable command (Matlab)
MF   Metafont text file
MFG   Manufacturing file (Pro/ENGINEER)
MGF   A file in a Materials and Geometry Format
MGF   Font file (MicroGrafx)
MHP   Microsoft Home Publishing file
MHT   MHTML document (Microsoft)
MHTM   MHTML document (MIME)
MHTML   MHTML document (MIME)
MI   Miscellaneous file (Generic)
MI   Data file (Cocreate ME10)
MIC   Image Composer file (Microsoft)
MID   MIDI music
MIF   Interchange format (Adobe FramMaker)
MIFF   Machine Independent File (Generic)
MII   Datafile (MicroStat-II)
MIME   See MIM.
MIX   Picture file (Microsoft PhotoDraw 2000)
MIX   Picture file (Microsoft Picture-It!)
MIX   Resource archive (Westwood Studios)
MIX   Object file (Power C)
MJF   Audio file similar to MP3 (Mjuice) (Opens with WinAmp)
MK   Makefile (Generic)
MKE   Makefile (Microsoft Windows SDK)
MKI   Graphic Image (MagView 5.0) (Japanese)
MKP   Autodesk Visual Lisp IDE Markup file
MKP   Autodesk Visual Lisp IDE Markup file
MKS   Datafile (TACT)
ML3   Project file (Milestones 3.x)
MLB   Macro library (Symphony)
MLI   A file in 3D Studio's Material-Library format
MLID   Muliple link interface driver file (Generic)
MLM   Groupwise email file (Novell Groupwise)
MM   Text file (MultiMate Advantage II)
MMAP   MindManager Brainstorm and Process Control Map
MMC   Catalog file (Microsoft Clip Gallery 5.x)
MMF   Mail file (Microsoft)
MMF   Meal Master Format, a recipe catologing format
MMG   Beyond 20/20 table or aggregate data file
MML   Bulk mail file (Created by MyMailList)
MMM   Multimedia movie (MacroMind Director 3.x)
MMM   Multimedia movie (Microsoft)
MMO   Memo Writer file (RapidFile)
MMP   Output video (Bravado)
MMP   MindManager file (MindMapor)
MN2   Mission file (Descent2)
MN3   Mission file (Descent3)
MND   Mandelbrot for Windows
MND   Menu source (AutoCAD Menu Compiler)
MNG   Multi-image Network Graphics
MNG   Map (DeLorme Map'n'Go)
MNI   Mandelbrot for Windows
MNT   Menu file (Microsoft FoxPro)
MNU   Advanced macro (HP NewWave)
MNU   Interact menu (Intertal Systems)
MNU   Menu (AutoCAD Menu Compiler)
MNU   Menu (Norton Commander)
MNU   Menu file (Visual dBase)
MNX   Compiled menu (AutoCAD)
MNX   Menu (Microsoft FoxPro)
MNY   Account book (Microsoft Money)
MOB   Device definition (PEN for Windows)
MOD   Spreadsheet (Microsoft Multiplan)
MOD   Modula-2 source code file (Clarion Modula-2)
MOD   Kernel module (Microsoft Windows 9.x)
MOD   Amiga/PC tracker module
MOD   FastTracker, StarTrekker, Noise Tracker (etc.) music module file
MOF   Windows Management Object file
MON   Monitor description (ReadMail)
MOV   Movie (AutoCAD/AutoFlix)
MOV   Movie (QuickTime for Microsoft Windows)
MOZ   Zipped (Compressed) mod file
MP2   MPEG Audio Layer 2 file (MIME video file)
MP3   MPEG Audio Layer 3 (AC3) file
MP4A   MPEG Audio Layer 4 file
MPA   MPEG-related file (MIME type 'mpeg')
MPC   Calendar file (Microsoft Project)
MPD   Database file (Microsoft Project)
MPE   MPEG animation
MPEG   MPEG animation
MPG   MPEG animation
MPM   Mathplan Macro library (WordPerfect for Windows)
MPP   Drawing file (CAD)
MPP   Project file (Microsoft Project)
MPQ   Blizzard game data file
MPR   Menus (compiled) (Microsoft FoxPro)
MPT   Bitmap graphics (Multipage TIFF)
MPV   View file (Microsoft Project)
MPX   Exchange file (Microsoft Project) used for exporting data
MPX   Compiled menu program (Microsoft FoxPro)
MPZ   DraCAD (Japanese) file
MRB   Multiple resolution bitmap graphics (Microsoft C/C++)
MRI   MRI Scan
MRS   Macro resource file (WordPerfect for Windows)
MSA   Archive (Magic Shadow)
MSC   Common console document (Microsoft Windows 2000)
MSC   Makefile (Microsoft C)
MSD   Diagnostics report file (Microsoft MSD) (Diagnostics)
MSDL   Scene Description Language (Manchester)
MSF   Network 7.0 mail file
MSG   Mail message (Microsoft)
MSI   Installer package (Microsoft Windows)
MSN   Mission File (Descent)
MSN   Network document (Microsoft)
MSP   Windows Installer patch file
MSP   Paint bitmap (Microsoft)
MSS   Manuscript text file (Scribble)
MSS   Manuscript text file (MINCE)
MSS   Manuscript text file (Jove)
MSS   Manuscript text file (Perfect Writer)
MST   Minispecification file (Prosa)
MST   Setup script (Microsoft SDK)
MST   Windows Installer transform
MSV   Sony Memory Stick Compressed Voice File; requires Sony plug-in for Windows Media Player
MSW   Text file (Microsoft Word)
MSX   Compressed CP/M archive (MSX)
MTH   Math file (Derive)
MTM   Music module (MOD) (Multitracker)
MTW   Datafile (Minitab)
MTX   Twain device driver (32 bit)(UMax)
MU   Menu (Quattro Pro)
MUL   Online game called Ultima online
MUS   Interactive music audio data file (Electronic Arts)
MUS   Music (MusicTime)
MUS   Music (Generic)
MUS10   Audio (Mus10)
MV   Server-side script file (Miva)
MVA   Video accelerator file (Matrox)
MVB   Multimedia Viewer file (Microsoft)
MVC   Image file (Sony Digital Mavica)
MVE   Interplay video file (Descent2, Fallout2)
MVF   Stop frame file (AutoCAD-AutoFlix)
MVI   Movie command file (AutoCAD-AutoFlix)
MVL   Descent 2 (game) movie archive
MVL   3D ultrasound file
MVW   Log file (Saber LAN)
MWF   Animation (ProMotion)
MWP   Smartmaster file (Lotus WordPro 97)
MXD   Map file (ArcInfo)
MXT   Datafile (Microsoft C)
MYP   Presentation file (Make Your Point)

[manimarank]

File Extension Listing for "N":

NAN   Nanoscope files (Raw Grayscale)
NAP   Video file (EnerGraphics)
NAP   Metafile (NAP)
NB   Text file (Nota Bene)
NC   Instructions for numerical control machine (CAMS)
NCB   Developer Studio file (Microsoft)
NCC   CNC (Computer Numeric Control) file (CamView 3D)
NCD   Change directory (Norton)
NCF   Internal clipboard (Lotus Notes)
NCF   Command File (Netware)
NCH   Outlook Express folder file
NCO   Nero BackItUp compressed backup file
NDB   NetOp database (Danware Data)
NDB   Network database (Intellicom)
NDO   3D low-polygon modeler (Nendo)
NDX   Database file (1ACT! for Microsoft Windows)
NDX   Index file (Cindex)
NDX   Index file (dBase II-III-IV)
NEO   Raster graphics (Atari Neochrome)
NES   Emulator ROMS for game console (Nintendo)
NET   Netlist output file (Orcad Schematic Capture)
NET   Network configuration file
NEW   New info
NEZ   Emulator file used for game consoles (NES)
NFF   Neutral File Format
NFO   Infobase file (Folio)
NFO   Info file database text
NFT   Template file (Netobject Fusion)
NG   Online documentation database (Norton Guide)
NIL   Icon Library file (EasyIcons-compatible) (Norton)
NIST   Audio (NIST Sphere)
NLB   Data (Oracle 7)
NLM   Loadable Module (Netware)
NLO   NetG Skill Builder file
NLS   National Language Support file used for localization (for example, by Uniscape)
NLU   E-Mail Trigger file (Norton LiveUpdate)
NLX   Form (FormWorx 3.0)
NMEA   GPS Log Data file
NOD   File (Netobject Fusion)
NP   Project schedule (Visual Planner 3.x)
NP   Project schedule (Nokia Planner)
NPI   Source for interpreter (dBase Application Generator)
NRF   Data file (NICOLET)
NRG   Image file (Nero)
NRI   iManage file
NRL   Template (Microsoft Outlook)
NRL   iManage infoRite document hyperlinks
NS2   Database (Lotus Notes version 2)
NS3   Database (Lotus Notes version 3)
NS4   Database (Lotus Notes version 4)
NSF   Database (Lotus Notes)
NSO   Document file (NetObject Fusion)
NST   Music module (MOD) (Noise Tracker)
NSV   Nullsoft streaming video file that comes with Winamp
NT   Startup files (Microsoft Windows NT)
NTF   Database template (Lotus Notes)
NTR   Executable ASCII text file
NTS   Executable ASCII text file
NTS   Tutorial (Norton)
NTX   Index file (CA-Clipper)
NUF   Message for new users (1st call) (Procomm Plus)
NWC   Song file (Noteworthy Composer)
NWS   News message (MIME RFC822) (Microsoft Outlook Express)
NXT   Sound file (NeXT)

[manimarank]

File Extension Listing for "O":

O   Object file (Atari)
O   Object file (GCC)
O   Object file (Unix)
OAS   Word processor document (Fujitsu OAS)(Japanese)
OAZ   Fax (NetFax Manager)
OB   Object cut/paste file (IBM LinkWay)
OBD   Binder (Microsoft Office)
OBD   Binder template (Microsoft Office)
OBJ   Object file
OBR   Object browser data file (Borland C++)
OBS   Script (ObjectScript)
OBV   Visual interface (ObjectScript)
OBZ   Binder Wizard (Microsoft Office)
OCF   Object craft file (Object Craft)
OCR   Transcribed fax-to-text file (FAXGrabber)
OCX   OLE custom control
ODC   OpenDocument Chart
ODG   OpenDocument Graphic
ODI   OpenDocument Image
ODIF   OpenDocument Interchange Format
ODIF   OpenDocument Chart Template
ODL   Type library source (Visual C++)
ODP   OpenDocument Presentation file
ODS   OpenDocument Spreadsheet
ODS   Mailbox file (Microsoft Outlook Express)
ODT   OpenDocument Text file
OFD   Form definition (ObjectView)
OFF   Object File (3D Mesh)
OFN   FileNew file (Microsoft Office)
OFT   Template (Microsoft Outlook)
OGG   Ogg Vorbis audio file
OGM   Ogg Media video file
OKR   Feldeinteilung module file (3-D Fassade Plus)
OKT   Music module (MOD) (Oktalyzer)
OLB   Object library (VAX)
OLB   Object Library (OLE) (Microsoft)
OLD   Backup file (Generic)
OLE   Object Linking and Embedding (OLE) custom control (Microsoft)
OLI   Text file (Olivetti)
OMC   Atrac3 (Sony Music Store) audio file
OMF   Open Media Format File
ONE   Microsoft OneNote 2007 file
ONE   SEMONE Compressed Archive
ONE   SEMONE Compressed Archive file
ONE   EdgeCAM Licensing data file
ONE   docPointer Visual ReadMe file
OO1   Voice file (Typhoon)
OOGL   Object Oriented Graphics Library
OOM   Swap file (Shroom)
OPJ   Project file (Orcad Schematic Capture)
OPL   Organiser Programming Language source file (Psion/Symbian)
OPN   Active options (Exact)
OPO   Output executable file (OPL)
OPT   Optimize support file (QEMM)
OPT   Developer Studio file (Microsoft)
OPW   Organization chart (Org Plus for Windows)
OPX   Inactive options (Exact)
OPX   Microsoft Organizer Organization Chart
OPX   Extension DLL (OPL)
OR2   Calendar file (Lotus Organizer 2)
OR3   Lotus Organizer 97 file
ORA   Configuration file (Oracle 7)
ORA   Parameter file (Oracle)
ORC   Script (Oracle 7)
ORG   Calendar file (Lotus Organizer)
OSS   Search file (Microsoft Office)
OST   Offline file (Microsoft Exchange/Outlook)
OTG   OpenDocument Graphic Template
OTI   OpenDocument Image Template
OTL   Template file (Super NoteTab) (Fookes)
OTL   Template file (PrintMaster Gold)
OTL   Outline font description (Z-Soft Type Foundry)
OTT   OpenDocument Text Template
OTX   Text file (Olivetti Olitext Plus)
OUT   Output file (Microsoft C)
OV   Database file (Revelation-DOS)
OV1   Overlay file
OV2   Overlay file
OVD   Datafile (ObjectVision)
OVL   Overlay file
OVR   Overlay file

[manimarank]

File Extension Listing for "P":

P   Application parameter file (ReaGeniX code generator)
P   Picture file (APPLAUSE)
P   Source code (Pascal)
P10   Plot 10 drawing (Tektronics)
P16   16 Channel Music file (ProTracker 16)
P22   Patch file (Patch 22)
P3   Project Planner file (Primavera)
P65   Document file (PageMaker 6.0)
P7C   Digital ID file (MIME)
PA   Print Artist Project file
PA1   Worktable (PageAhead)
PAB   Personal Address Book (Microsoft)
PAC   Image (Stad)
PAC   Package file (Sound Blaster Studio II)
PAD   Keypad definition (Telemate)
PAF   Personal Ancestry File (free genealogy software from the Mormon Church)
PAK   WAD file (Quake)
PAK   Compressed archive (PAK)
PAL   Color palette (Microsoft)
PAL   A compressed file (Generic)
PAN   Printer specific file (CorelDRAW)
PAQ   Password encrypted zip file (Hewlett-Packard)
PAR   Parameter file (Fractint)
PAR   Permanent output file (Microsoft Windows 3.x)
PAR   Parts application (Digitalk PARTS)
PART   eMule partial download
PART   Go!Zilla partial download
PART   eDonkey partial download
PAS   Source code file (Borland Pascal)
PAT   Pattern file (CorelDRAW)
PAT   Patch file (Advanced Gravis Ultrasound/Forte Technologies)
PAT   exePatch utility used for Warcraft2 (WarHack)
PAT   Hatch pattern file (DataCAD)
PB   Phone book (WinFax Pro)
PB   Setup file (PixBase)
PB   Fax (FAXability Plus)
PB1   Document (First Publisher for Windows)
PBA   Source code file (Powerbasic BASIC) (Genus)
PBD   Dynamic library, an alternative to a native DLL (PowerBuilder)
PBD   Phone book (FaxNOW!-Faxit)
PBF   Turtle Beach Pinnacle Bank File
PBI   Profiler binary input file (Microsoft Source Profiler)
PBI   Include file (PowerBasic) (Genus)
PBK   Microsoft Phonebook
PBL   PowerBasic library (Genus)
PBL   Library file used in a development environment (PowerBuilder)
PBM   Planar bitmap graphic (XLib)
PBM   Portable bitmap graphic
PBN   Portable Bridge Notation file
PBO   Profiler binary output (Microsoft Source Profiler)
PBR   Resource file (PowerBuilder)
PBT   Profiler binary table (Microsoft Source Profiler)
PC   Text file (IBM)
PC3   Custom palette (Harvard Graphics 3.0)
PC8   Ascii text IBM8 character set (NewWave Write)
PCB   Application data file (Microsoft Powerpoint)
PCC   Cutout picture vector graphics (PC Paintbrush)
PCD   P-Code compiled test scripts as in Microsoft Test and Microsoft Visual Test
PCD   Image (Kodak Photo-CD)
PCE   Maps Eudora mailbox names to DOS filenames
PCF   Profiler command file (Microsoft Source Profiler)
PCH   Precompiled header file (Microsoft C/C++)
PCH   Patch file (Generic)
PCI   PCI Miniport file (Microsoft Windows System file)
PCJ   Multimedia authoring tool graphics (IBM Linkaway-Live)
PCK   Pickfile (Turbo Pascal)
PCL   Printer Control Language file (printer-ready bitmap) (Hewlett-Packard)
PCM   PCM file (OKI MSM6376 Sythesizer Chip)
PCM   Audio file
PCP   Live Update Pro file (Symantec)
PCS   Picture storage file (Microsoft)
PCS   Animation (PICS)
PCT   PICT drawing (Macintosh)
PCW   Text file (PC Write)
PCX   PC Paintbrush bitmap (ZSoft)
PDA   Bitmap graphics
PDB   Physical model backup file (PowerDesigner)
PDB   Database file (3Com PalmPilot)
PDB   Brookhaven Protein Database file
PDB   Data file (TACT)
PDD   Graphic image that can be opened with Paint Shop Pro and Adobe PhotoDeluxe
PDF   Definition File
PDF   Printer Definition File (Netware)
PDF   Graphics file (ED-SCAN 24bit)
PDF   Portable Document file (Adobe Acrobat) (displayable with a Web browser)
PDL   Project description language file (Borland C/C++)
PDM   Physical model file (PowerDesigner)
PDM   Photo DVD Maker project file
PDP   Print Shop Deluxe file (Broderbund)
PDS   NASA Planetary Data System Format Space Mission Data
PDS   Photographic image file (origin not yet identified)
PDS   PLDASM Source Code
PDS   Print Shop Graphic
PDS   Hardware assembly source code file (Pldasm)
PDS   Broderbund Print Shop Deluxe
PDT   Database file (ProCite)
PDV   Printer driver (Paintbrush)
PDW   Document (Professional Draw)
PDX   Active Sensing PDXplorer IPC-2570 Product Data Exchange Information File
PDX   Adobe Acrobat Catalog Index
PDX   Database index file (ProCite)
PDX   Adobe Acrobat Catalog Index
PE3   Image archive file (QuickViewer)
PE3   Image archive file (Ulead PhotoImpact)
PE4   Image archive file (Ulead PhotoImpact v.4.0)
PEB   Program Editor bottom overflow file (WordPerfect for Windows Library)
PED   Program Editor delete save file (WordPerfect for Windows)
PEM   Program Editor macro (WordPerfect for Windows library)
PEQ   Program Editor print queue file (WordPerfect for Windows)
PER   Program Editor resident area file (WordPerfect for Windows Library)
PES   Program Editor work space file (WordPerfect for Windows Library)
PET   Program Editor top overflow file (WordPerfect for Windows Library)
PF   Windows XP prefetch file (data read into RAM in anticipation of a user asking for it)
PF   Encrypted file (Alladin Systems)
PFA   Type 3 font (ASCII)
PFB   Type 1 font (binary)
PFC   Text file (First Choice)
PFC   Personal filing cabinet file (AOL)
PFC   PF Component file
PFD   SoftPro Real Estate Proform Document Format
PFF   Paraform file for 3D modeling (Scandata)
PFK   Programmable function keys (XTreePro)
PFM   Printer Font Metrics (Microsoft)
PFS   Database text file (PFS:Write)
PFT   Printer font (ChiWriter)
PG   Page cut/paste file (IBM LinkWay)
PGI   Printer graphics file device driver (PGRAPH Library)
PGL   Plotter drawing (Hewlett-Packard)
PGM   Program file (Signature)
PGM   Portable Graymap (bitmap)
PGN   Portable game notation file (ChessMaster and others)
PGP   PGP encrypted file
PGS   Manual page (man4dos)
PH   Optimized .goh file (Geoworks)
PH   Perl header file
PH   Phrase-table (Microsoft C/C++)
PH   Temporary file generated by Microsoft Help Compiler
PHN   Phone list (QmodemPro)
PHN   Phone list (UltraFax)
PHO   Phone database (Metz Phone for Windows)
PHP   HTML page that includes a PHP script
PHP3   HTML page that includes a PHP script
PHR   Zoom MRS-802 Phrase Audio Data file
PHR   Phrases (LocoScript)
PHS   PHScript File
PHTML   perl-parsed HTML
PHTML   HTML page that includes a PHP script
PI1   Low resolution picture file (Dages Elite)
PI2   Medium resolution picture file (Dages Elite)
PI3   High resolution picture file (Dages Elite)
PIC   Pixar picture file (SDSC Image Tool)
PIC   Picture file (Lotus)
PIC   PICT drawing (Macintosh)
PIC   3D Image file (SoftImage)
PIC   Bitmap (PC Paint)
PICT   PICT image file (Macintosh)
PIF   PIF drawing (IBM)
PIF   Vector graphics GDF file (IBM Mainframe)
PIF   Compressed archive (Macintosh)
PIF   Program Information File
PIG   WAD file (Lucas Arts Dark Forces
PIN   Data file (Epic Pinball)
PIN   Data file (Epic Pinball)
PIX   Alias image file (SDSC Image Tool)
PIX   Bitmap (Inset Systems)
PJ   Source Integrity file (MKS)
PJ   Project file (CA-SuperProject)
PJT   Visual Foxpro Project (Microsoft)
PJT   Visual FoxPro memo file (Microsoft)
PJX   Visual FoxPro project file (Microsoft)
PK   Packed bitmap font file (TeX DVI)
PKA   Compressed file archive (PKARC)
PKG   Installer script (NEXT)
PKG   Developer Studio application extension (similar to a DLL file) (Microsoft)
PKR   Public Keyring (PGP)
PKT   Packet file (Fidonet)
PL   Source code file (Perl)
PL   Source code file (Prolog)
PL   Property list font metric file (TeX)
PL   Palette (Harvard Graphics)
PL   Interleaf printerleaf (or WorldView) format
PL1   Room plan (3D Home Architect)
PL3   Chart palette (Harvard Graphics 3.0)
PLB   Library file (Microsoft FoxPro)
PLC   Add-in file (Lotus 1-2-3)
PLG   A format use by REND386/AVRIL
PLI   Data description file (Oracle 7)
PLL   Pre-linked library file (Clipper 5)
PLM   Module (DisorderTracker2)
PLN   Spreadsheet (WordPerfect for Windows)
PLR   Pilot file (Descent 1-3)
PLS   MPEG PLayList file (used by WinAmp)
PLS   MYOB Plus file
PLS   Sample file (DisorderTracker2)
PLT   Plot drawing (AutoCAD)
PLT   Palette (Generic)
PLT   Pre-linked transfer file (Clipper 5)
PLT   Sign-making software (Gerber Optical)
PLT   Drawing (HPGL Plotter)
PLY   Presentation screen (Harvard Spotlight)
PLY   Data file (PopMail)
PM   Module (Perl)
PM   Bitmap graphics (Presentation Manager)
PM3   Document (PageMaker 3.0)
PM4   Document (PageMaker 4.0)
PM5   Document (PageMaker 5.0)
PM6   Document (PageMaker 6.0)
PMC   Graphics (A4TECH Scanner)
PMD   Adobe PageMaker 7.x file
PMM   Program file (Amaris BTX/2)
PN3   Printer device driver (Harvard Graphics 3.0)
PNG   Browser catalogue (Paint Shop Pro)
PNG   Bitmap file (MacroMedia FireWorks)
PNG   PrintMaster graphics file
PNG   Bitmap (Portable Network Graphics)
PNM   Portable aNY Map graphics (PBM)
PNT   QWK reader pointer file (MarkMail 2.x)
PNT   Pen Table plotting file (Pro/Engineer)
PNT   Graphic file (MacPaint)
PNTG   Same as PNT file
POG   PIG file extension (Descent2)
POH   Optimized .goh file (Geoworks)
POL   3D polygonal modeling file (Innovmetric)
POL   Windows NT Policy file
POP   Message index (PopMail)
POP   Popup file (Visual dBase)
POT   PowerPoint template (Microsoft)
POV   Persistence of Vision file (Ray-Tracer)
POW   Chord chart (PowerChords)
PP   Compressed Amiga archive (POWERPACKER)
PP4   Bitmap (Picture Publisher 4)
PPA   PowerPoint Add-in (Microsoft)
PPB   Button bar for print preview (WordPerfect for Windows)
PPD   PostScript Printer definition file specification (Adobe Acrobat v.4.0)
PPF   Pinnacle Program File (Turtle Beach)
PPI   Graphics file (Microsoft PowerPoint)
PPL   PolaroidPalettePlus ColorKey device driver (Harvard Graphics 3.0)
PPM   Portable Pixelmap bitmap
PPO   Pre-processed output file (Clipper 5)
PPP   Desktop publishing default output file (Serif PagePlus)
PPP   Document or finished project (Parson Power Publisher)
PPS   ArcView Processing Set Codes
PPS   Personal Producer Storyboard
PPS   PowerPoint Slideshow
PPS   PowerPoint slide show (Microsoft)
PPT   PowerPoint presentation (Microsoft)
PPX   Cognos Powerplay portable report (xml format)
PQB   Master boot backup file (PowerQuest BootMagic)
PQI   Drive image file (PowerQuest)
PR2   Printer driver (dBase IV)
PR2   Presentation (Aldus Persuasion 2.x)
PR3   Presentation (Aldus Persuasion 3.x)
PR3    Postscript printer driver (dBase IV)
PRC   Resource (text or program) file (3com PalmPilot)
PRD   Printer driver (Generic)
PRE   Settings (Programmer's WorkBench)
PRE   Settings (Microsoft C/C++)
PRE   Presentation (Lotus Freelance)
PREL   Adobe Premiere Elements Project
PRF   Settings file (Macromedia Director)
PRF   Pixel Run Format graphics (Improces-Fastgraph)
PRF   Printer driver (dBase IV)
PRF   Output file (Profiler)
PRF   System file (Microsoft Windows)
PRG   Program source files (Atari)
PRG   Program file (WAVmaker)
PRG   Program source files (dBase IV, Clipper 5, and Microsoft FoxPro)
PRI   Printer definitions (LocoScript)
PRJ   Project file (3D Studio) (DOS)
PRM   Parameter file (Generic)
PRM   MYOB Premier file
PRN   Windows Printer file (DataCAD)
PRN   Printer driver (Signature)
PRN   Text file (Lotus 1-2-3-Symphony)
PRN   Print Table (space delimited text)
PRND   PageMaker 7.0 file
PRO   Configuration file (Pro/Engineer)
PRO   Graphics profile file (DOS)
PRO   Project file (Terramodel)
PRO   Source code file (Prolog)
PRP   Data conversion saved project file (Oberon Prospero)
PRS   Printer resource font file (WordPerfect for Windows)
PRS   Procedure file (dBase IV)
PRS   Presentation file (Harvard Graphics for Windows)
PRT   Printer driver (Dr. Halo)
PRT   Part file (Pro/Engineer)
PRT   Part file (CADkey)
PRT   Unigraphics CAD file
PRT   A print-formatted file
PRV   Internet provider template file (psiMail)
PRX   Compiled program (Microsoft FoxPro)
PRZ   Graphics file (Lotus Freelance 97)
PS   Postscript-formatted file (a Postscript printer-ready file)
PSA   Adobe Photoshop Elements Album
PSB   Sound Bank file (Pinnacle)
PSD   Bitmap (Adobe Photoshop)
PSE   Bitmap graphics (IBM printer Page SEgment)
PSF   Outline PostScript printer font (ChiWriter)
PSI   A-law audio file (psion)
PSM   Sound data file (Epic Pinball)
PSM   Symbol table of IDE (Turbo Pascal)
PSM   Studio module (ProTracker)
PSP   Procedure (Prodea Synergy)
PSP   Image file (PaintShop Pro)
PSR   Report file (PowerSoft)
PST   Personal Folder File (Microsoft Outlook)
PT3   Template (PageMaker 3.0)
PT3   Device driver (Harvard Graphics 3.0)
PT4   Template (PageMaker 4.0)
PTB   Script file (PubTech BatchWorks)
PTB   Table file (Pro/Engineer)
PTB   Peachtree backup file
PTD   Table file (Pro/ENGINEER)
PTD   LiveNote Portable Transcript document
PTF   ProTracker Tennis Match file
PTF   LiveNote Portable Transcript file
PTL   Petal file (ASCII version of Microsoft Visual Modeler)
PTM   Music module (MOD) (Polytracker)
PTM   Macro (PubTech BatchWorks)
PTN   PaperPort (ScanSoft) thumbnail image index file
PTR   QWK reader pointer file (QMail)
PTX   RealLegal Portable E-Transcript viewer file
PUB   Document (Microsoft Publisher)
PUB   Public key ring file (PGP)
PUB   Publication (Ventura Publisher)
PUD   Map file (WarCraftII)
PUT   Compressed archive (PUT)
PVD   Script file (Instalit)
PVL   Library file (Instalit)
PVT   Local pointlist (Fidonet)
PW   Text file (Professional Write)
PWD   Word document (Microsoft Pocket)
PWL   Password list file (Microsoft Windows 9.x)
PWP   Text document (Professional WritePlus)
PWP   Image file (a roll of film viewed using Photoworks)
PWZ   PowerPoint wizard (Microsoft)
PX   Primary database index (Paradox)
PXL   Pocket Excel spreadsheet (Microsoft)
PXW   Pixtran file
PY   python Script file
PY   Saved emessages (YAHOO)
PYC   python Compiled script file
PZD   Default settings (Pizazz Plus)
PZO   Overlay file (Pizazz Plus)
PZP   Palette (Pizazz Plus)
PZS   Settings (Pizazz Plus)
PZT   Transfer file (Pizazz Plus)
PZX   Swap file (Pizazz Plus)

[manimarank]

File Extension Listing for "Q":

QAD   Document (PF QuickArt)
QAG   Quick Access Group data file (Norton Desktop)
QAP   Application file (Omnis Quartz)
QBE   Saved Query (Quattro Pro)
QBE   Saved query (dBase IV)
QBM   QuickBooks Portable Company file
QBO   Compiled query (dBase IV)
QBS   Program file (Microsoft QuickBasic)
QBW   Spreadsheet data (QuickBooks for Windows)
QCP   Voice file (Qualcomm Pure Voice)
QD0   Data file-segment 10 (Omnis Quartz)
QD1   Data file segment 1 (Omnis Quartz)
QD2   Data file segment 2 (Omnis Quartz)
QD3   Data file segment 3 (Omnis Quartz)
QD3D   QuickDraw 3D Metafile (Apple)
QD4   Data file segment 4 (Omnis Quartz)
QD5   Data file segment 5 (Omnis Quartz)
QD6   Data file segment 6 (Omnis Quartz)
QD7   Data file segmnet 7 (Omnis Quartz)
QD8   Data file segment 8 (Omnis Quartz)
QD9   Data file segment 9 (Omnis Quartz)
QDF   Data file (Quicken)
QDK   Backup of startup files (QEMM)
QDT   Data file from the Quicken UK Accountancy/Tax/Invoice program (QuickBooks)
QDV   Graphics file (Steve Blackstock Giffer)
QEF   Query file (Microsoft Excel)
QEL   Electronic library file (Quicken)
QFL   Document (FAMILY LAWYER)
QFX   Fax (QuickLink)
QIC   Backup file (Microsoft)
QIF   Import file (Quicken)
QIF   Image (MIME)(QuickTime)
QLB   Library file (Microsoft C/C++)
QLB   Library file (Quick)
QLC   Data (PostScript help file)
QLP   Printer driver (QuickLink)
QM   Motion file (Quality)
QM4   Option or services file (QMail 4.x Mail Door)
QPR   Print queue device driver (OS/2)
QPR   Generated query program (Microsoft FoxPro)
QPX   Compiled query program (Microsoft FoxPro)
QQT   Qardware definition file (Quick Qard Technology)
QRP   Report file (Liberty for Windows 2.0)
QRP   Report builder file (Centura)
QRS   Equation Editor support file (WordPerfect for Windows)
QRT   QRT graphics file (Ray Tracer)
QRY   Query (dBase IV)
QRY   Query (Microsoft)
QSD   Datafile (Quicken)
QST   Tab file (Quake Spy)
QT   Movie file (QuickTime)
QTI   Image file (QuickTime)
QTIF   Image file (QuickTime)
QTM   Movie file (QuickTime)
QTP   Preferences file (QuickTime)
QTS   Image file (QuickTime)
QTS   PICT image file (Macintosh)
QTX   Image file (QuickTime)
QUE   Perseus Development Corporation SurveySolutions Questionnaire
QUE   CuteFTP Queue File
QWK   Message file (QWK Reader)
QXD   Data file (QuarkXpress)
QXL   Element library (QuarkXpress)
QXP   Project file (replaces QXD file as of QuarkXPress 6)
QXT   Template file (QuarkXpress)

[manimarank]

File Extension Listing for "R":

R   Resource file (Pegasus Mail)
R   Ratfor file (FORTRAN Preprocessor)
R8   Raw graphics (One byte per pixel) plane one (PicLab)
R8P   Pcl 4 bitmap font (Intellifont)
RA   RealMedia streaming audio file
RAD   Radar data file (Radar ViewPoint)
RAM   RealMedia metafile
RAO   ReadAllOver (YOUniverse)
RAR   WinRAR Compressed Archive
RAR   Java JCA Resource Adapter Module
RAS   Bitmap (Sun Raster Images)
RAT   Datafile (RATS)
RAV   Norton Antivirus file
RAV   Rave file (used by programmers)
RAW   Raw signed PCM data
RAW   Raw signed PCM data
RAW   Raw File Format (bitmap)
RBF   Datafile (Rbase)
RBH   Maintained by RoboHELP, the RBH file adds to the information contained in the Help project file
RC   Resource script (Borland C++)
RC   Configuration file (emacs)
RC   Resource script (Micosoft C/C++)
RCG   Newsgroup file (Netscape)
RD1   Registered level file (Descent1)
RDF   Compiled UIC source code (Geoworks UI Compiler)
RDF   Research document information format
RDF   Resource Description Framework file (related to XML and metadata)
RDI   Device-independent bitmap file
RDL   Registered Level file (Descent)
RDX   Datafile (Reflex)
RDZ   RemoteDocs compressed and encrypted file
REC   Recorded macro (Microsoft Windows 3.x)
REC   Voice file (RapidComm)
REC   Record file (Sprint)
REC   Datafile (EpiInfo)
RED   Path information file (Clarion Modula-2)
REF   Reference file (Generic)
REG   Registration file (Corel)
REG   OLE registration file (Microsoft Windows 3.x)
REG   Registration file
REM   Remarks file (Generic)
REP   Report file (Visual dBase)
REP   Report file (Report Designer)
REP   Report file (DataBoss)
REP   Report file (CodeReporter)
REP   Reply file (QWK Reader)
REQ   Request file (Generic)
RES   Compiled resource file (Borland C++)
RES   Resource file (dBase IV)
RES   Resource file (Microsoft Visual C++)
REV   Revision file (GeoWorks)
REX   Report definition (Oracle)
REX   Source code file (REXX)
REZ   Resource file (Generic)
RF   Raster graphics file (Sun)
RFT   Revisable Form Text (part of IBM's DCA or Document Content Architecture)
RGB, SGI   RGB files (Silicon Graphics)
RGX   Symbol tables (ReaGeniX code generator)
RH   Resource header file (Borland C++ 4.5)
RI   Data file (Lotus 1-2-3)
RIB   Graphics in Renderman format (3DReality)
RIC   Fax document (Ricoh)
RIF   Image file (Metacreations Painter 5)
RIF   RIFF bitmap graphics (Fractal Design Painter)
RIP   Graphics (remote access)
RIX   Bitmap graphics (ColorRIX VGA Paint)
RL1   Regestered level file (Descent1)
RL2   Registered level file (Descent2)
RL4   Bitmap graphics file
RL8   Bitmap graphics file
RLA   Wavefront raster image (SDSC Image Tool)
RLB   Data file (Harvard Graphics Win 9.x)
RLC   Graphics file (1 bit per pixel scanner output file)
RLE   Run-Length Encoded bitmap (SDSC Image Tool)
RLZ   Realizer source code file (CA-Realizer)
RM   Video file (RealAudio)
RMB   RegistryMaster branch
RMD   Document (Microsoft RegMaid)
RMF   Rich music format (Beatnik)
RMF   Rich Map Format (used by 3-D game editors to store a map)
RMI   MIDI music
RMK   Makefile (Clipper RMake)
RMVB   RealVideo Variable Bit Rate File
RN   Xpl Program file (Nota Bene)
RND   Rendering slide (AutoCAD-AutoShade)
RNO   Runoff file (VAX)
ROL   FM music Adlib Music file (Roland)
ROM   Cartridge-based home video game emulator file (exact copy of ROM contents in cartridges from Atari 2600, Colecovision, Sega, Nintendo, etc.; not interchangeable between emulators)
ROQ   Id software game file
ROV   Data file (Rescue Rover)
RPD   Database (RapidFire)
RPL   Video file (Tomb Raider)
RPL   Text document (Replica)
RPM   Package Manager (RedHat Linux)
RPS   Borland Translation Repository
RPT   Crystal Reports file ( and a sub-set of Microsoft Visual Basic)
RRS   Saved game file (Ace Road Rash)
RS   Datafile (Amiga Resource Reassembler)
RS_   Resource fork file (Macintosh Mac-ette)
RSB   Red Storm bitmap (Rainbow 6 (Game) and several image editing programs)
RSC   Resource file (Generic)
RSL   Paradox 7 reports (Broderland)
RSM   Resume file (WinWay Resume Writer)
RSP   Response file (Generic)
RTC   Rich Text Compressed file
RTF   Help file script (Microsoft Windows 9.x)
RTF   Rich Text Format document
RTK   Used by RoboHELP to simulate the search feature of Windows help
RTL   Text file (Generic)
RTL   Run Time library (NU 7.0)
RTM   Music module (MOD) (Real Tracker)
RTP   Software update package data file (RTpatch)
RTS   Runtime library file (CA-Realizer)
RTS   RoboHELP to speed complex operations
RTS   RTSL document (RealAudio)
RUL   Extension used in InstallShield
RUN   Compiled output p-code file (Softworks basic compiler) (SoftworksLtd)
RVP   Scan Configuration file (MIME) (Microsoft)
RVW   Review file (Generic)
RWS   Resource Workshop data file (Borland C++)
RWX   Script file (RenderWare)
RXX   RAR compressed files from a multi-volume archive (xx = a number from 01 to 99)
   

[manimarank]

File Extension Listing for "S":

S   Source code file (Scheme)
S   Assembler source code (Unix)
S3I   Instrument file (Scream Tracker v 3.0)
S3M   16 channel music file (Scream Tracker v 3.0)
SAI   Encrypted video file (Integrated Sensors)
SAL   Datafile (SORITEC)
SAM   Signed 8bit sample data file
SAM   Document (AMI Professional)
SAR   Compressed archive (SAR)
SAS   SAS program file
SAS7BCAT   SAS system catalog
SAS7BDAT   SAS system data set
SAS7BNDX   SAS system index
SAV   Backup file (Generic)
SAV   Configuration file (Generic)
SAV   Saved game file (Generic)
SAVE   Doom 3 and Quake 4 Savegame File
SB   Raw Signed Byte (8bit) audio data
SB!   Locking file (Superbase)
SBD   Data definition file (Superbase)
SBD   Storyboard data file (Storyboard Editor)
SBD - File Format   SAP 2000 file Structural Analysis Program from CSI.inc
SBD - File Format   SAP 2000 file Structural Analysis Program from CSI.inc
SBF   File data (Superbase)
SBI   Instrument file (Creative Labs SoundBlaster)
SBK   Bank file (Soundblaster)/EMU SoundFont v1.x (Creative Labs Soundfont 1.0)
SBL   Flash object (ShockWave)
SBP   Program file (Superbase)
SBP   Dml program file (Superbase 4)
SBQ   Query definition file (Superbase)
SBR   Support file (Source Browser)
SBT   Notes related to record data (Superbase 4 for Windows)
SBV   Form definition file (Superbase)
SC   Display driver (Framework II)
SC   Pal script (Paradox)
SC2   SAS 6.12 catalog (Windows 95/NT, OS/2, Mac)
SC2   Schedule+ 7.0 file (Microsoft)
SC3   Renamed dBase III screen mask file (dBase IV)
SC3   Screen device driver (Harvard Graphics 3.0)
SC3   Saved game file (SIMM City 3000)
SC4   Level file (Roller Coaster Tycoon)
SC7   SAS 8.2 catalog
SCA   Datafile (SCA)
SCC   Text file (Generic)
SCC   Source Safe file (Microsoft)
SCD   Object description language graphics (Scodl Scan Conversion)
SCD   Datafile (Microsoft Schedule+ 7.0)
SCD   Slide image (Matrix/Imapro SCODL)
SCF   Multimedia show (ScoreMaker)
SCF   Spell checker configuration file (Symphony)
SCF   Command file (Microsoft Windows Explorer)
SCH   Schematics file (ORCAD)
SCH   Datafile (Microsoft Schedule+ 7.0)
SCI   System configuration information file (Generic)
SCI   Fax document (SciFAX)
SCI   Inspire native format (ScanVec)
SCM   Video game console ROM emulater file
SCM   Scheme source code file (Generic)
SCN   Screen file (Kermit)
SCN   Videowave Scene file
SCN   Scene data file (TrueSpace2)
SCO   High score file (Generic game file)
SCP   Script file (BITCOM)
SCP   Dial-Up Networking Script
SCR   Fax image (Generic)
SCR   Debug source code (DOS Debug)
SCR   Screen snapshot file (dBase IV)
SCR   Screen snapshot file (Procomm Plus)
SCR   Screen font file (LocoScript)
SCR   Screensaver file (Microsoft Windows 9.x)
SCT   CT bitmap (Scitex)
SCT   FoxPro forms (Microsoft)
SCT   SAS catalog (Dos)
SCT01   SAS catalog (Unix)
SCTP   Applescript script
SCV   CASmate Native format (ScanVec)
SCX   Bitmap graphics (ColorRIX)
SCX   Chart (Stanford Chart)
SCX   Screen file (Microsoft FoxPro)
SCX   FoxPro forms (Microsoft)
SCY   Security file (ReaGeniX)
SD   Audio (Sound Designer I)
SD2   SAS 6.12 data set (Windows 95/NT OS/2, Mac)
SD2   Flattened file/data fork (Sound Designer II)
SD7   SAS 8.2 data set
SDA   File archive description (Fidonet Software Distribution Network)
SDC   Spreadsheet (Staroffice)(StarCalc)
SDD   Presentation file (Staroffice)(Starimpress)
SDF   System Data File Format - legacy Unisys (Sperry) format
SDI   Software distribution network information file
SDK   Floppy disk image (Roland)
SDL   Library file (SmartDraw)
SDN   Software distribution network compressed archive
SDP   Datafile (Cocreate SolidDesigner)
SDPC   Datafile (Cocreate SolidDesigner)
SDR   Drawing (SmartDraw)
SDS   Raw Midi Sample Dump Standard file
SDT   Template (SmartDraw)
SDV   Semicolon Divided Values file
SDW   Raw Signed DWord (32bit) data
SDW   Graphic file (Lotus WordPro)
SDX   Midi Sample Dump Standard files compacted by SDX
SEA   Self-expanding archive (used by Stuffit for Mac files and possibly by others)
SEC   Secured animation file (Disney Animation Studio)
SEC   Secret key ring file (PGP)
SED   Screen editor script files (SED)
SEL   Data file (Copy Books)
SEP   Printer seperator page (Generic)
SEP   Tagged Image File Format (TIFF) bitmap
SEQ   Sequential instruction file (Bubble Chamber)
SEQ   Animation file (Atari)
SES   Session information file (Clarion Modula-2)
SES   Session file (Cool Edit) (common digital audio editor file )
SESSION   Internet Security Scanner file (ISS)
SET   Install driver sets (Symphony)
SET   Setup option file (Generic)
SET   Voice set files (Quartet)
SET   Configuration file (1st Reader)
SEW   Sewing program file (Generic)
SF   Wps attribute storage file (OS/2 WorkPlace Shell)
SF   SoundFile format (IrCam)
SF2   Bank file (Creative Labs Soundfont 2.0)(Soundblaster)
SF2   SoundFont file (EMU version 2.0)
SFD   Sound File Data (SoundStage)
SFI   Graphics file (SIS Framegrabber)
SFI   Printer font file (Hewlett-Packard Laser Jet Landscape)
SFI   Printer font file (Ventura Publisher)
SFI   Sound File Info (SoundStage)
SFK   Sound file (Sonic Foundry)
SFL   Pcl 4 bitmap font (Ventura Publisher)
SFL   Pcl 4 bitmap font (Intellifont)
SFL   Pcl 4 bitmap font (LandScape)
SFN   Font file (SPX)
SFP   Pcl bitmap font (Intellifont)
SFP   Pcl bitmap font (Ventura Publisher)
SFP   Pcl bitmap font (Portrait)
SFR   Sample Resource (Sonic Foundry)
SFS   Pcl 5 scalable font file (Intellifont)
SFT   SoftGrid Program Package Container
SFT   ChiWriter Screen Font
SFW   Mangled JPEG (Seattle Filmworks)
SFX   Self-extracting archive (RAR)
SG   Image file (SnapGraphix)
SG1   Graphics file (Stanford Graphics)
SGF   Graphics file (Sonique)
SGF   Document w/graphics (StarWriter)
SGI   Graphics file (Silicon Graphics)
SGI   Graphics file (IRIS)
SGML   Standard Generalized Markup Language
SGP   Statistics file (STATGRAPHICS Plus)
SGT   Save/Get keyboard macro (Signature)
SH   ASCii archive (Unix/SHAR)
SH   Shell script (Unix)
SH3   Presentaion file (Harvard Graphics)
SHB   Document shortcut file
SHB   Presentation (Corel Show)
SHG   Bitmap (HotSpot)
SHK   Compressed archive (Arthurian Shrink Archiver)
SHK   Compressed Apple archive (SHRINKIT)
SHM   Shell macro (WordPerfect for Windows Library)
SHN   Audio compression file (Shorten)
SHP   File format used by some programs for 3D modeling of multipart interactive triangle models
SHP   Shapefile spatial data format (used by many GIS programs)
SHP   Source code and shape file for text fonts (AutoCAD)
SHP   DOS shapes file (3D Studios)
SHR   File archive (Unix ASCii) (SHAR)
SHS   Shell scrap file; reportedly used to send "password stealers"
SHT   Pocket Spreadsheets file
SHTML   HTML file containing Server Side Includes (SSI)
SHW   Presentation (Harvard Graphics 2.0)
SHW   Slide Show (WordPerfect for Windows)
SHW   Presentation (Corel Show)
SHX   Shapefile spatial index file (ArcView)
SHX   Shape entities (AutoCAD)
SIF   Setup installation files (Microsoft Windows NT)
SIG   Signature file (PopMail)
SIG   Current program settings (Signature)
SIG   PrintMaster graphics file
SIK   Backup files (Sicherungskopie)
SIK   Backup files (Microsoft Word for Windows)
SIT   Compressed archive of Mac files (Stuffit)
SIZ   Configuration file (Oracle 7)
SIZED   Gallery resized photo image
SKA   Secret Keyring file (PGP)
SKF   Drawing file (AutoSketch)
SKL   Resource file (Macromedia Director)
SL   Source code file (S-Lang)
SL   Save Layout extension (PACT)
SLB   Slide Library File (AutoCAD)
SLC   Compiled SALT script (Telix)
SLD   Slide File (AutoCAD)
SLDASM   SolidWorks Assembly File
SLDDRW   SolidWorks Drawing File
SLDPRT   SolidWorks Part File
SLI   Slide file (MAGICorp Slide Service)
SLK   Symbolic link spreadsheet (SLYK)
SLL   Sound data file (Generic)
SLT   Script application language (SALT) (Telix script source)
SM   Maillist (SoftSpoken Mailer)
SM   Script file (ScriptMaker)
SM   Simple MODRATEC Graphic
SM   Text file (Samna Word)
SM   Source code file (Smalltalk)
SM3   Symbol file (DataCAD)
SMD   Video game console ROM emulator file
SMF   Fax document (SMARTFAX)
SMK   Image file (Smack Player)
SMK   Image file (Nascar Racing '99)
SMK   Image file (Deer's Revenge)
SMM   Macro (AMI Pro)
SMP   Sample file (AdLib Gold)
SMP   Samplevision format
SMS   Emulator ROM image file (8-bit Sega Master System)
SMT   SmartObject file (IconAuthor)
SMT   Text file (Smart Ware II)
SMW   Simpl Windows for Crestron processors
SMZIP   Stepmania package format
SNA   Drive Snapshot compressed Disk Image file
SND   Sound resource (Macintosh)
SND   Raw unsigned PCM data
SND   Sample (AKAI MPC)
SND   Sound file (NeXt)
SNDR   Sound file (Sounder)
SNDT   Sound file (SndTool)
SNG   Midi song file (Prism)
SNG   Midi song file (Midisoft Studio)
SNM   Mailbox (mail folder) index (Netscape)
SNO   Source code file (Snobol4)
SNP   Output video file (Computer Eyes)
SNP   Microsoft Access database snapshot file
SO   Shared library file (Unix)(equivalent to a Windows DLL)
SOL   Solution file (Common used with game examples,tutorials)
SOM   Sort information files (Paradox)
SOM   Network serial numbers (Quattro Pro)
SON   Song file (Creative Labs SoundBlaster Studio II)
SOU   Sound file (Creative Labs SoundBlaster Studio)
SP   Compressed archive for Unix (Sprint)
SP2   Quake2 pcx 8-bit sprite builder file
SP3   Quake2 pcx 32-bit sprite builder file (for use with CyberPunkQE)
SP4   Saved game (Roller Coaster Tycoon)
SPA   FutureSplash Flash file (Macromedia)
SPC   Temporary file (WordPerfect for Windows)
SPC   Program file (Microsoft MultiPlan)
SPD   Scalable font (Speedo)
SPD   Scalable font (Harvard Graphics 3.0)
SPD   Data file (Speech)
SPF   Slide presentation file (EnerGraphics)
SPG   Glossary file (Sprint)
SPI   Graphics file (Phillips Scanner)
SPI   Graphics file (Siemens Scanner)
SPL   Sample file (DigiTracker)
SPL   Compressed archive (SPLINT)
SPL   Customized printer driver (Sprint)
SPL   Personal spell dictionary (Signature)
SPL   Printer spool file (Microsoft Windows 3.x)
SPL   Sample file (Generic)
SPL   Object file (ShockWave Flash)
SPM   Data file (WordPerfect for Windows)
SPP   Printer file (Sprint)
SPPACK   Sound sample (SP Pack)
SPR   Generated screen program (Microsoft FoxPro)
SPR   Sprite (Image layering and resizing)
SPR   Document letter (Sprint)
SPRITE   Bitmap file (Acorn)
SPS   Screen driver (Sprint)
SPS   Spssx source code file (VAX/VMS)
SPT   Support file (MITAC disk/system management utility package)
SPT   Source code file (Spitbol)
SPU   Picture file (Spectrum 512)
SPW   Worksheet (SigmaPlot)
SPX   Compiled screen program (Microsoft FoxPro)
SPZ   SudoKoach puzzle file
SPZ   SudoKoach puzzle
SQC   Structured Query Language (SQL) common code file
SQL   Generally used by database products as an extension for SQL queries (scripts, text, or binary)
SQL   SQL queries (Informix)
SQP   Query result of audio search (Sonique)
SQR   Structured Query Language (SQL) program file
SQZ   Compressed archive (SQUEEZE)
SRE   Undefined file (Motorola)
SRF   Raster graphics file (Sun)
SRM   Video game console ROM emulator file
SRP   SCript file (QuickLink)
SRZ   Source file (DataFlex)
SS   Bitmap graphics (Splash)
SS4   MODRATEC SigScribe4 Railway Signal Interlocking Design Data File
SS5   MODRATEC SigScribe5 Railway Signal Interlocking Design Data File
SSA   Video file (Sub Station Alpha)
SSD   SAS database (Dos)
SSD   Datafile (SAS/PC)
SSD01   SAS data sets (Unix)
SSF   Spreadsheet file (Enable)
SSP   Datafile (SAS Transport)
SSV   Quake 2 Savegame File
ST   Instrument library (Scream Tracker)
ST   Disk Image file (Atari)
ST   Stamp file (NeoPaint)
ST   Source code file (Little SmallTalk)
STA   Stack file (SpinMaker Plus)
STA   Saved state (Reflection 4.0)
STB   Stub library (Genus GX Kernel)
STD   State transition diagram graphic file (Prosa)
STD   Standard script file (LocoScript)
STD   StarOffice Drawing Template
STF   Compressed archive (SHRINKTOFIT)
STL   Stereolithography file
STM   Music module (MOD) (Scream Tracker 2)
STM   State transition diagram model file (Prosa)
STM   Music file (Scream Tracker)
STM   Shorter suffix for .shtml, an HTML file containing a server side include (SSI)
STO   Pascal stub OBJ file (Genus GX Kernel)
STP   Catia file
STQ   Text file (Statistica) (StatSoft Software)
STR   Structure list OBJ file (dBase IV Application Generator)
STR   Screensaver file
STS   Song file (Music) (Scream Tracker)
STS   Project status information file (Microsoft C/C++)
STT   Taci Pixia palette file
STW   OpenOffice.org 1.0 Text Document Template
STW   Data file (SmartTerm for Windows)
STX   Tax form (CA-Simply Tax)
STX   Electronic book file (SmarText)
STY   Style sheet (Generic text and graphics programs0
STY   Style sheet (Ventura Publisher)
SUE - File Format   Lossless data compression and archival format from System Enhancement Associates (an alternative for ARC)
SUI   Suit library (Simple User Interface Toolkit)
SUM   Summary file (Generic)
SUN   Rasterfile graphics (Sun)
SUP   Supplementary dictionary files (WordPerfect for Windows)
SVD   Autosave file for document (WordPerfect for Windows)
SVF   Simple Vector Format 2D image (Microstation)
SVG   Scalable vector graphics file (Adobe)
SVG   Return To Castle Wolfenstein Savegame File
SVG   Autosave file for glossary (WordPerfect for Windows)
SVP   Graphics file (Sonique)
SVS   Autosave file for style sheet (WordPerfect for Windows)
SVX   Interchange file format, 8SVX/16SV
SVX   Sound file (Amiga 8SVX)
SVY   Database file (SAVVY/PC)
SW   Raw signed Word (16bit) data
SWA   Shockwave audio file in Macromedia Director (an MP3 file)
SWF   Object (ShockWave Flash)
SWG   Swag Packet file (SWAG Reader)
SWP   Document backup file (Sprint)
SWP   Swap file (DOS)
SWP   Swap file (DataCAD)
SXC   OpenOfficeCalc file
SXD   StarOffice Drawing
SXW   OpenOffice.org 1.0 Text Document
SY1   Smartpix symbol library (Ami Pro)
SY3   Symbol file (Harvard Graphics 2.0)
SYD   Backup of startup files (QEMM)
SYLK   Microsoft Excel spreadsheet file
SYM   Program symbol table (Generic to compilers)
SYM   Symbol file (Harvard Graphics 2.0)
SYM   Precompiled header file (Borland C++)
SYN   Synonym file (Microsoft Word 5.0)
SYN   SDSC Synu image file (SDSC Image Tool)
SYS   Datafile (SYGRAPH)
SYS   Datafile (SYSTAT)
SYS   Datafile (SPSS/PC)
SYS   System file Device driver or hardware configuration file
SYS   System file (Generic)
SYW   Graphics symbols (Harvard Graphics)
SYW   Wave file (Yamaha SV-series)

[manimarank]

File Extension Listing for "T":

T   Tape archive (TAR) (Without compression)
T   Tester symbol file (ReaGeniX code generator)
T   Source file (TADS)
T2T   Modeling software file (Sonata CAD)
T44   Temporary file for sorting index (dBase IV)
T64   Emulator tape image file (Commodore 64)
TAB   Guitar Tablature file
TAB   Table file (MapInfo GIS)
TAG   Query tag name file (DataFlex)
TAH   Turbo assembler help file (Borland C++)
TAK - File Format   Tom's lossless Audio Kompressor (TAK) audio compression file
TAL   Text illustration file (TypeAlign)
TAR   Compressed archive (TAR)
TAR   Tape Archive
TAZ   Compressed ASCII archive (TAR)
TAZ   Compressed ASCII archive (COMPRESS)
TAZ   Gzip/Tape archive (Unix)
TB1   Font file (Borland Turbo C)
TB2   Font file (Borland Turbo C)
TBF   Fax document (Imavox TurboFax)
TBK   Memo backup file (dBase IV)
TBK   Memo backup file (Microsoft FoxPro)
TBK   Toolbook file (Asymetrix Toolbook)
TBK   Interactive multimedia files (Asymetrix Toolbook)
TBL   Table of values (OS/2)
TBL   Graphics (Native format) (Pagemaker TableEditor)
TBO   Turbo Architecture Database (used by U.S. Federal Highway Administration's "Turbo Architecture" program)
TBS   Text elements (Microsoft Word for Windows)
TBX   Table (Project Scheduler 4)
TC   Configuration file (Borland C++)
TC   Configuration file (Turbo C)
TCF   Test Crafter File (storage file for tests developed in Cambridge UP software)
TCH   Turbo C Help file (Borland C++)
TCL   Script in the TCL/TK Language
TCW   Drawing file (TurboCAD for Windows)
TD   Configuration file (Turbo Debugger for DOS)
TD0   Disk image file (Teledisk)
TD2   Configuration file (Turbo Debugger for WIN32)
TD4   Saved track design (Roller Coaster Tycoon)
TDB   Database file (TACT)
TDB   Database file (Thumbs Plus)
TDF   Typeface definition file (Speedo)
TDF   Font file (TheDraw)
TDH   Help file (Turbo Debugger0
TDK   Keystroke recording file (Turbo Debugger)
TDS   Symbol table (Turbo Debugger)
TDW   Configuration file (Turbo Debugger for Windows)
TEF   Fax document (Relisys TEFAX)
TEL   Hostfile (Telnet)
TEM   Input template (IconAuthor)
TEM   Turbo Editor Macro Language script (Borland C++)
TEX   TEX text file (Scientific Word)
TEX   Datasheet file (Idealist)
TEX   Texture file
TF   Configuration file (Turbo Profiler)
TFA   Area file (Turbo Profiler)
TFC   Catalogue file (Tobi's Floppy Disk Cataloguer)
TFH   Help file (Turbo Profiler)
TFM   TeX font metrics file (TeX)
TFM   Tagged font metric file (TeX)
TFM   Form file (Form Tool Gold)
TFS   Statistics file (Turbo Profiler)
TFW   ArcView World file for TIF image (GIS application)
TG1   Project file (On Target)
TGA   Targa bitmap (Countour Mortgage Loan Format)
TGA   Winpoint Loan file (Microsoft Excel)
TGA   Targa bitmap (Adobe Acrobat,TrueVision)
TGQ   Movie file (Dungeon Keeper 2) (Bullfrog Software)
TGV   Video file (Electronic Arts) (Need for Speed I/II/III, NBA '96)
TGZ   Gzip/Tape archive (Unix)
THAI   Husquvania sewing machine file
THEME   Desktop theme (Microsoft Windows 9.x)
THM   Thumbnail image file (Microsoft Clip Gallery v.1.x)
THN   Thumbnail (Graphics Workshop for Windows)
THS   Thesaurus dictionary (WordPerfect for Windows)
TIF   Tag image bitmap file (TIFF)
TIFF   Tag image bitmap file (TIFF)
TIG   Map file (Tiger) (Used by the US Government to distribute Map files)
TIL   Fuzzy Logic knowledge base file (Togai InfraLogic Fuzzy-C Compiler)
TIM   Texture/Image file (Playstation)
TIS   Tile set (MahJongg 3.0)
TJF   backup files (VAXTPU Editor)
TLB   Reference table (Bubble Editor)
TLB   Text library (VAX)
TLB   Type library (Visual C++)
TLB   OLE type library files (Microsoft)
TLC   Compiled tool command language source code file (Swat)
TLE   Two-Line element set (NASA)
TLP   Project timeline file (Microsoft Project)
TLX   Data file (Trellix)
TMD   TextMaker document from SoftMaker
TMF   Tagged font metric file (WordPerfect for Windows)
TMO   Ztg global optimizer default optimizer file (Zortech C++)
TMP   Temporary file (Microsoft Windows) (ALL)
TMS   Script file (Telemate)
TNV   Data file (BitWare)
TOC   Table of contents file (Eudora Mailbox)
TOL   Image file (Kodak Photo Enhancer)
TORRENT   BitTorrent file
TOS   Self-Extracting archive (Atari ST)
TOS   The Operation System for Atari line of 16/32 and 32/32 computers
TP   Sesson-state file (Turbo Profiler)
TP   Configuration file (Turbo Pascal)
TP3   Template file (Harvard Graphics)
TP4   Saved picture file (Roller Coaster Tycoon)
TPB   Downloadable PCL Soft font file backup (HiJaak)
TPF   Downloadable PCL Soft font file (HiJaak)
TPH   Help file (Turbo Pascal)
TPL   Template file ( Cakewalk Audio)
TPL   Template file (Harvard Graphics 2.0)
TPL   Template file (DataCAD)
TPL   Encrypted lesson file (TutorPro)
TPL   Residents units library (Turbo Pascal)
TPP   Protected mode units (Borland Pascal 7.0)
TPP   Project file (Teleport Pro)
TPU   Command file (VAXTPU Editor)
TPU   Turbo Pascal Unit (Turbo Pascal)(BGI)
TPV   Packed graphics file (TutorPro)
TPW   Packed wave files (TutorPro)
TPW   Turbo Pascal Unit (BGI) (Turbo Pascal for Windows 9.x)
TPW   Session-state file (Turbo Profiler for Microsoft Windows)
TPX   Image file (ULead Photo Express)
TPZ   Compressed archive (GNUzip)
TPZ   Compressed archive (TAR)
TR   Session-state settings (Turbo Charge Debugger for DOS)
TR2   Session-state settings (Turbo Charge Debugger for Win32)
TRA   Saved game file (Coaster)
TRC   Debug support file (Power CTrace)
TRE   Directory tree file (PC-Tools)
TRIF   Tiled Raster Interchange Format
TRK   Script file (Kermit)
TRM   Terminal settings file (Microsoft Windows 3.x)
TRM   Terminal file (Generic)
TRN   Project usage log (MKS Source Integrity)
TRN   Translation support file (Quattro Pro)
TRS   Executable file (MicroGraphix)
TRW   Session-state settings (Turbo Debugger for Windows)
TS   HDTV sample file (Transport Stream MPEG-2 video stream)
TSH   Broderbund Creatacard Transfer Project
TSK   Compaq iPaq picture image
TST   Printer test file (WordPerfect for Windows)
TSV   Tab-separated values file
TTF   TrueType font (Generic)
TTK   Translation tool kit file (Corel Catalyst)
TTO   Client access data specification file (AS/400) (Server to Client)
TUB   Corel Paint Shop Pro Tube File
TUV   Tutorial file (Many programs use this suffix for their tutorials) (Generic)
TV   Table view settings (Paradox)
TV1   Overflow file above insert point in document 1 (WordPerfect for Windows)
TV2   Overflow file above insert point in document 2 (WordPerfect for Windows)
TV3   Overflow file above insert point in document 3 (WordPerfect for Windows)
TV4   Overflow file above insert point in document 4 (WordPerfect for Windows)
TV5   Overflow file above insert point in document 5 (WordPerfect for Windows)
TV6   Overflow file above insert point in document 6 (WordPerfect for Windows)
TV7   Overflow file above insert point in document 7 (WordPerfect for Windows)
TV8   Overflow file above insert point in document 8 (WordPerfect for Windows)
TV9   Overflow file above insert point in document 9 (WordPerfect for Windows)
TVF   Table view settings (dBase IV)
TWD   MindMapper Brainstorm and Visual Map file
TWF   Data file (TABWorks)
TWW   Template file (TagWrite)
TX8   MS-DOS text
TXB   Encoded briefing file (Descent/D2)
TXF   Compressed archive (FREEZE)
TXF   Tax exchange format (Quicken and others)
TXF   Compressed archive (TAR)
TXI   Support file (TeX)
TXT   ASCII text-formatted data
TXW   Wave file (Yamaha TX16W)
TYM   Time Stamp files (PageMaker 4.0)
TZ   Old compression file (TAR), (COMPRESS)
TZB   Compressed archive (Tar)

[manimarank]

File Extension Listing for "U":

U   Subsampled Raw YUV Image
UAP   User agent profile (Used by wireless telephony applications)
UB   Raw unsigned byte (8-bit) data
UC2   Compressed archive (UltraCompressor II)
UCN   New compressed archive (UltraCompressor II)
UDB   Off-line application file used with Rockwell's Ultraware software
UDB   Microsoft Works file
UDB   PINO 3-Server File
UDB   Windows 2000 Uniqueness Database File
UDF   Image filter (Photostyler)
UDF   Unique Database (Microsoft Windows NT)
UDW   Raw unsigned doubleword (32-bit) data
UE2   Encrypted archive (UltraCompressor II)
UFO   Object file (Ulead)
UG   Drawing file (AutoCAD and others)
UHS   Binary file (Universal Hint System)
UI   User interface file (Sprint)
UI   Espire source code (Geoworks UI Compiler)
UIF   Long prompts for Microsoft Windows (WordPerfect for Windows)
UIH   Espire header file (Geoworks UI Compiler)
UL   Audio file (ULAW)
ULAW   (CCITT G.711) audio (US Telephony)
ULD   Uploaded file information (Procomm Plus)
ULT   Music module (MOD) (UltraTracker)
UMB   Backup file (archive) (MemMaker)
UNI   Datafile (Forcast Pro)
UNI   UniMod music module (MOD) (MikMod)
UNX   Text file (Unix specific information)
UPD   Updated program data (dBase)
UPD   Updated program data (Generic)
UPI   Program file (ULead Photo Impact)
UPO   Compiled updated datafile (dBase)
UPX   Saved Image file (ULead Photo Express)
URF   Universal radar format (Radar ViewPoint)
URL   Internet shortcut file (Universal Resource Locator)
USA   Unreal II Savegame File
USE   Source Integrity file (MKS)
USP   Printer font w/updated USACII extended character set (Pagemaker)
USR   Audit trail file (Pro/Engineer)
USR   User database file (Turbo C++)
USR   User database file (Tour)
USR   User database file (Procomm Plus)
UU   Compressed ASCII archive (UUDE/ENCODE)
UU   UU-encoded file
UUE   UU-encoded file
UUE   Executable compressed ASCII archive (UUDE/ENCODE)
UW   Raw unsigned 16-bit) datafile (Word)
UWF   Wave file (UltraTracker)

[manimarank]

File Extension Listing for "V":

V   Main image input file (Vivid 2.0)
V   Consistency check support file (ReaGeniX Code Generator)
V8   8-bit audio file (CoVox)
VAL   Values list object file (dBase Application Generator)
VAL   Asset management document (Milliplex OmniValue)
VAL   Validity checks/referential integrity checks (Paradox for Windows)
VAN   Animation file (VistaPro)
VAP   Annotated speech file (Generic)
VAR   ASCII text file for data dictionary (Sterling Software Groundworks, COOL Business Team Enterprise Model)
VAR   Variable file (IconAuthor)
VBA   VBase file
VBP   Project file (Microsoft Visual Basic)
VBR   Remote automated registration file (Microsoft Visual Basic)
VBS   Script file (Microsoft Visual Basic)
VBW   Workspace file (Microsoft Visual Basic)
VBX   Visual basic extension (Microsoft Visual Basic)
VBX   Custom control file (Microsoft Visual Basic)
VC   Spreadsheet (VisaCalc)
VC   Include file with color definitions (Vivid 2.0)
VCB   Visual COMMBasic or VCBasic macro definition (created with Outsideview)
VCE   Unformatted voice file (Natural Microsystems) (NMS)
VCE   Unformatted voice file (used by Cool Edit)
VCF   Virtual card file (Many programs use this extension)
VCF   Configuration file; defines objects for use with Sense8's WorldToolKit (Vevi)
VCF   Virtual card file (Netscape)
VCT   Class library (Microsoft FoxPro) (MFC)
VCW   Visual workbench information file (Microsoft Visual C++)
VCX   Class library (Microsoft FoxPro)(MFC)
VDA   Graphics image (Generic)
VDA   Targa bitmap
VDR   Drawing file (ComputerEasy Draw)
VDX   Virtual device driver
VDX   XML for Visio drawing file
VDX   Vector graphic file
VEL   3D drawing file (CAD( (Ashlar)
VEW   View file (Lotus Approach)
VEW   View file (Clipper 5)
VF   Vegas Movie Studio File
VFL   Clip art file (PrintMaster Gold)
VFM   Voting form (Voter)
VFN   Voting form for customers (VFN)
VGA   Video graphics array (Font type for display on a VGA Monitor)
VGA   Video graphics array (Monitor type, also defines if your monitor is compliant with the new (1994) SVGA (Super Video Graphics Array) (SVGA)
VGD   Visual display driver ( Generic CADD)
VGR   Graphics file (Ventura Publisher)
VI   Virtual Instrument file (National Instruments LABView)
VI   Graphics file (Jovian Logic VI)
VIC   Graphics file (Vicar)
VID   Screen device driver (Microsoft Word)
VID   Bitmap graphics (YUV12C M-Motion Frame Buffer)
VID   Bethesda video files (Terminator, Future Shock)
VID   Shell monitor file (Microsoft DOS v.5)
VIF   Khoros Visualisation image (SDSC Image Tool)
VIFF   Khoros Visualisation image (SDSC Image Tool)
VIK   Graphics Image (Viking)
VIR   File identified as a virus-infected file by Norton AntiVirus and possibly others
VIS   Graphics image file (VIS)
VIV   Streaming video file (VivoActive)
VIZ   dVS/dVISE file (Division)
VLB   Library file (Corel Ventura)
VLM   Drafting program file (Vellum, by Ashler)
VM   Virtual memory file (Geoworks)
VMC   Virtual memory configuration file (Adobe Acrobat Reader)
VMD   On-line video file (Sierra) (Torin's Passage)
VMF   Font characteristics file (Ventura Publishing)
VMF   Audio file (FaxWorks)
VML   Vector markup language (used by Microsoft Office 2000)
VMS   Text file with vms specific information
VNC   Virtual Network Computing file used by Real and Tight VNC
VO   Include file with object definiton (Vivid 2.0)
VOB   Encrypted video and audio files used on current DVD's (Digital Video Disk)
VOC   Audio file (Quartet)
VOC   Audio file (generated by RCA digital voice recorder)
VOC   Audio file (Creative Labs Sound Blaster)
VOF   Object folder (VZ Programmer)
VOX   Formatted voice file (Natural Microsystems) (NMS)
VOX   Audio file (Talking Technology)
VOX   Dialogic audio file coded using ADPCM
VP   Publication (Ventura Publisher)
VPG   Graphics image file (VPGraphics)
VQA   Video files (Westwood Studios)
VQE   VQ Locator file (Yamaha Sound)
VQF   VQ file (Yamaha Sound) (possible emerging standard)
VQL   VQ Locator file (Yamaha Sound)
VRF   Configuration file (Oracle 7)
VRM   Overlay file (Quattro Pro)
VRML   A VRML file
VRP   Project file (VXRexx)
VRS   Video device driver (WordPerfect for Windows)
VS   Include file w/surface definition (Vivid 2.0)
VSD   Drawing file (flow chart or schematic)(Shapeware Visio)
VSL   Download List file (GetRight)
VSM   Simulation model (VisSim)
VSN   A Windows 9x/NT ViruSafe version file; used to keep information about all the files in a directory; when a file is accessed, information is compared with the VSN information to ensure that they match
VSP   Data print file (Schedule Soft)
VSP   Image sprite (SPX)
VSS   Smartshapes image file (Shapeware Visio)
VSS   Stencil file (Shapeware Visio)
VST   Bitmap graphic file (TrueVison Vista)
VST   Targa bitmap (Generic)
VSW   Workspace file (Shapeware Visio)
VUE   View file (dBase IV)
VUE   View file (Microsoft FoxPro)
VUE   Animation file (3D Studio)
VW   Text file (Volkswriter)
VWP   Audio plug-in (Voxware MetaVoice Toolkit)
VWP   Audio MetaSound plug-in (VoxWare Audio Compression Toolkit version 2.02.61)
VWR   File viewer (PC Tools)
VXD   Virtual device driver (Microsoft Windows 9.x)

[manimarank]

File Extension Listing for "W":

W   Word chart file (APPLAUSE)
W30   Printer font (Ventura Publisher)
W30   Printer font (AST TurboLaser)
W31   Startup file (Microsoft Windows 3.1)
W3L   W3Launch file
W44   Temporary file for Sort or Index (dBase)
WAB   Outlook file (Microsoft Outlook, Outlook Express)
WAD   Large file for Doom game containing video, player level, and other information
WAL   Texture file (Quake 2)
WAS   Script source code file (Procomm Plus Aspect)
WAV   Waveform sound (Microsoft Windows)
WAX   Compiled script file (Procomm Plus Aspect)
WB1   Notebook (QuattroPro for Windows)
WB2   Spreadsheet (QuattroPro for Windows)
WB3   Text file (QuattroPro for Windows)
WBC   Image file (Webshots)
WBF   Batch file (Microsoft Windows 9.x)
WBK   Backup file (Microsoft Word for Windows)
WBL   Upload file (Argo Webload II)
WBR   WordBar File (Crick Software)
WBT   Wordbar template (Crick Software)
WBT   Batch file (WinBatch)
WBZ   WebShots image
WCD   Macro token list file (WordPerfect for Windows)
WCF   Webex Saved Chat File
WCM   Data transmission file (Microsoft Works)
WCM   Macro (WordPerfect fdor Windows)
WCP   Product information description file (WordPerfect for Windows)
WD1   Word Express file
WD2   Database file (Info Select) by (Micro Logic)
WDB   Database file (Microsoft Works)
WDF   WebArt data file (database file that can be converted for use in many programs)
WDG   Warftpd remote daemon file
WDM   Microsoft Visual InterDev98 templates Web Project Items file
WEB   Web source code file
WEB   Web document (Corel Zara)
WFB   Bank file (Maui/Rio/Monterey) (Turtle Beack WaveFront)
WFD   Audio waveform (WaveForm Manager Pro)
WFD   Drum set (Maui/Rio/Monterey)(Turtle Beach WaveFront)
WFL   Flowchart file (Winflow)
WFM   Windows form (Virtual dBase)
WFN   Symbol (Corel Draw)
WFP   Program file (Turtle Beach WaveFront)(Maui/Rio/Monterey)
WFT   Data file (NICOLET (Old Format), see NRF)
WFX   Data file (WinFax)
WG1   Worksheet (Lotus 1-2-3/G)
WG2   Worksheet (Lotus 1-2-3 for O/S2)
WGP   Data file (Wild Board Games)
WI   Wavelet compressed bitmap (Corel)
WID   Width table (Ventura Publisher)
WIF   Wavelet image file (see WI)
WIL   WinImage file
WIM   Wireless identity module (Used by wireless application protocols)
WIN   Window file (dBase)
WIN   Window preference file (Pro/Engineer)
WIN   Window file (Microsoft FoxPro)
WIRE - File Format   Wavefront Studio Wireframe
WIZ   Page wizard (Microsoft Publisher)
WIZ   Wizard file (Microsoft Word)
WK1   Spreadsheet (Lotus 1-2-3 v. 1 and 2)
WK3   Spreadsheet (Lotus 1-2-3 v. 3)
WK4   Spreadsheet (Lotus 1-2-3 v. 4)
WKB   Document file (WordPerfect for Windows)
WKE   Spreadsheet (Lotus 1-2-3 Educational version)
WKQ   Spreadsheet (Quattro Pro)
WKS   Worksheet spreadsheet (Lotus 1-2-3)
WKS   Document (Microsoft Works)
WKS   Workspace file (Xlisp)
WKS   Spreadsheet (Symphony 1.0)
WLD   REND386/AVRIL file
WLF   Upload file (Argo Upload I)
WLK   Graphics file (Virtus Walkthrough)
WLL   Add-In file (Microsoft)
WMA   Audio file in Microsoft Windows Media format (Can be changed to ASF) Siren (Sonic Foundry)
WMC   Macro file (WordPerfect for Windows)
WMC   Text file (WordMARC)
WMC   Backup files for startup (MathCAD for Windows)
WMF   Metafile (Microsoft Windows)
WMV   Windows Media Player visual/audio file
WMZ   Windows Media Player skins file
WN   Text file (NeXT WriteNow)
WNF   Outline font description file (CorelDRAW)
WOA   Swap file (Microsoft Windows 3.x)
WOC   Organization chart (Microsoft Windows OrgChart)
WORKFLOW   Automator workflow
WOW   Music module (MOD) (Grave Composer)
WP   Document file (WordPerfect for Windows)
WP4   Document (WordPerfect for Windows 4.0)
WP5   Document (WordPerfect for Windows 5.0)
WP6   Document (WordPerfect for Windows 6.0)
WPA   Word processor document (ACT!)
WPD   Document (WordPerfect for Windows)
WPD   Demo file (WordPerfect for Windows) (ALL)
WPF   Fax document (WorldPort)
WPF   Form file (WordPerfect for Windows)
WPF   Document (Enable)
WPG   Graphics file (Microsoft Word for Windows)
WPG   Microsoft Word for Windows vector graphics (DrawPerfect)
WPK   Macro (Microsoft Word for Windows)
WPM   Macro (Microsoft Word for Windows)
WPS   MS Works Text Document
WPS   Rockbox Theme
WPT   Template (Microsoft Word for Windows)
WPW   PerfectWorks document (Novell)
WQ!   Compressed spreadsheet (QuattroPro)
WQ1   Spreadsheet (QuattroPro/DOS)
WQ2   Spreadsheet (QuattroPro version 5)
WR1   Spreadsheet (Symphony 1.1-2)
WR1   Symphony file (Lotus)
WRAP   MediaForge (XMLAuthor) media content file
WRD   Template (Charisma)
WRG   ReGet document
WRI   Write document (Windows Write)
WRK   Spreadsheet (Symphony 1.0)
WRK   Project file (CakeWalk Music Audio)
WRL   Virtual Reality model
WRP   3D modeling file (Raindrop Geomagic) (Scandata)
WRP   Compressed Amiga archive (WARP)
WRS   Resource file (Microsoft Word for Windows)
WRZ   Another VRML fileject
WS   Text file (WordStar)
WS1   Document (WordStar for Windows version 1)
WS2   Document (WordStar for Windows version 2)
WS3   Document (WordStar for Windows version 3)
WS4   Document (WordStar for Windows version 4)
WS5   Document (WordStar for Windows version 5)
WS6   Document (WordStar for Windows version 6)
WS7   Document (WordStar for Windows version 7)
WSD   Document (WordStar for Windows 2000)
WSP   WorkSpace file (Fortran PowerStation)
WST   Document (WordStar for Windows)
WSZ   Skin (WinAmp)
WTA   Used by wireless telephony applications
WV   WavPack lossless compressed audio file
WVL   Wavelet Compressed Bitmap
WVW   Interleaf WorldView format (a PDF format)
WWB   Button bar for document window (WordPerfect for Windows)
WWK   Keyboard layout file (WordPerfect for Windows)
WWL   Add-in file (Microsoft Word)
WXD   Music resource file (Relic Entertainment)(Home World)
WXP   Document file (EXP for Microsoft Windows)   

[manimarank]

File Extension Listing for "X":

X   Source code file (Lex)
X   AVS image (SDSC Image Tool)
X01   Secondary index file (Paradox)
X02   Secondary index file (Paradox)
X03   Secondary index file (Paradox)
X04   Secondary index file (Paradox)
X05   Secondary index file (Paradox)
X06   Secondary index file (Paradox)
X07   Secondary index file (Paradox)
X08   Secondary index file (Paradox)
X09   Secondary index file (Paradox)
X16   Macromedia Extra (program extension), 16 bit
X32   Macromedia Extra (program extension), 32 bit
XAR   Corel Xara drawing
XBM   A MIME 'X11" bitmap image
XCF   GIMP document
XCI   XML Configuration Information (Adobe enterprise forms product)
XDL   XML Schema file
XDP   Label file using Avery DesignerPro Label Design)
XEF   XGenics eManager XML form and data for eManager
XEM   XGenics eManager Metered units / credit definition for forms/file usage in eManager
XEP   XGenics eManager File packaging / unpacking information for eManager components
XES   XGenics eManager XML definition for UI skins
XET   XGenics eManager XML definition for eManager process
XEV   XGenics eManager File download definition for autoupdate and delivery of new procedures
XEZ   XGenics eManager Template package for eManager
XFD   Acu4GL/ACUCOBOL extended file description (from Acucorp)
XFN   Printer font file (Ventura Publisher)
XFN   Printer font file (Xerox)
XFT   XML Forms Template (from Adobe enterprise forms products such as Adobe Forms Designer)
XFT   Printer font file (24 Pin) (ChiWriter)
XFX   Fax Document (Various)
XHTML   eXtensible hypertext markup language
XI   Instrument file (FastTracker II)
XI   Instrument sample file (ScreamTracker)
XIF   Image file (Xerox) (same as TIF)
XIF   Image file (Pagis)
XIF   Image file eXtended (ScanSoft) the file is similar to TIFF and is a (Pagis) native format
XIF   Wang imaging file (Included with Windows 95)
XLA   Archive (Xlib)
XLA   Add-in file (Microsoft Excel)
XLB   Datafile (Microsoft Excel)
XLB   Toolbar file (Microsoft Excel)
XLC   Chart file (Microsoft Excel)
XLD   Dialogue file (Microsoft Excel)
XLK   Backup file (Microsoft Excel)
XLL   Dynamic link library (Microsoft Excel)
XLL   Add-in file (Microsoft Excel)
XLM   Macro file (Microsoft Excel)
XLR   Microsoft Works spreadsheet or chart
XLS   Worksheet file (Microsoft Excel)
XLT   Translation table (Lotus 1-2-3)
XLT   Translation table (Symphony)
XLT   Translation table (Procomm Plus)
XLT   Template file (Microsoft Excel)
XLV   VBA module (Microsoft Excel)
XLW   Workbook (Microsoft Excel)
XM   Music module (MOD) (Fast Tracker 2)
XMI   Compressed midi music (eXtended)
XML   eXtensible markup language
XNF   Network file (Standard)
XNK   Shortcut file (Microsoft Exchange)
XON   Datafile (Axon)
XPM   X BitMap format
XQT   Macro file (SuperCalc)
XQT   Executable file (Waffle)
XR1   Data file (Epic Megagames Xargon)
XRF   Cross-reference file (Generic)
XSX   Schema view layout description file (Microsoft XML Designer)
XTB   External translation table (LocoScript)
XTP   Data file (Xtree)
XWD   X Window Dump format (SDSC Image Tool)
XWF   Works file (Yamaha XG) (MIDI sequencing)
XWK   Keyboard mapping file (Crosstalk)
XWP   Text file (Xerox Writer)
XWP   Session file (Crosstalk)
XWS   Xara Webstyle Graphic
XX   Compressed ASCII archive (XXENCODE)
XXE   Compressed ASCII archive (XXENCODE)
XXX   XXXX
XY   Text file (XYWrite)
XY3   Document file (XYWrite III)
XY4   Document file (XYWrite IV)
XYP   Document file (XYWrite III Plus)
XYW   Document file (XYWrite for Windows 4.x)

[manimarank]

File Extension Listing for "Y":

Y   Compressed Amiga archive (YABBA)
Y   Grammar file (Yaac)
Y01   Secondary index file (Paradox)
Y02   Secondary index file (Paradox)
Y03   Secondary index file (Paradox)
Y04   Secondary index file (Paradox)
Y05   Secondary index file (Paradox)
Y06   Secondary index file (Paradox)
Y07   Secondary index file (Paradox)
Y08   Secondary index file (Paradox)
Y09   Secondary index file (Paradox)
YBK   Yearbook file (Microsoft Encarta)
YUV   Graphics file (YUV)
YZ   Compressed file archive (YAC)

[manimarank]

File Extension Listing for "Z":

Z   Unix file Compressed
Z   Compressed ASCII archive (COMPRESS)
Z3   Game module (Infocom)
ZAP   Compressed file (FileWrangler)
ZAP   Software installation settings file (Microsoft Windows)
ZDG   Compressed text document (Zview)
ZER   Data file (Zerberus)
ZGM   Graphics file (ZenoGraphics)
ZIP   Zip file Compressed archive
ZLT   ZoneAlarm Mailsafe Renamed .URL File (Zone Labs)
ZOM   Compressed Amiga archive (ZOOM)
ZOO   An early compressed file format
ZVD   Voice file (Zyxel Z-Fax)

[ravendawson]

thanks for compiling all these. This is a great source of information for file extension 2.

[fakeraybansoh]

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[pradeep prem]

there are more file extension words are having

they are using more extension in this word