| A | Object code library |
| AA | Audible audio file |
| AAM | Authorware shocked file |
| AAS | Authorware shocked packet |
| AB | Applix Builder file |
| ABF | Adobe Binary Screen Font |
| ABK | Corel Draw AutoBackup |
| ABO | Applix Builder Turbo file |
| ABS | MPEG Audio Sound file |
| ABS | Sometimes used to denote an abstract (as in an abstract or summary of a scientific paper) AutoBackup |
| ACA | Project Manager Workbench file |
| ACB | ACBM Graphic image |
| ACC | DR-DOS Viewmax file |
| ACE | ACE Archiver Compression file |
| ACL | Corel Draw 6 keyboard accelerator file |
| ACM | Windows system directory file |
| ACM | Dynamic Link Library (DLL) |
| ACP | Microsoft Office Assistant Preview file |
| ACR | American College of Radiology file |
| ACT | Microsoft Office Assistant Actor file |
| ACT | FoxPro Foxdoc Action Diagram |
| ACT | Action Presentation |
| ACV | Used to Compress and decompress audio data |
| AD | After Dark screensaver |
| ADA | Ada source text file (non-GNAT) |
| ADB | Ada source text body file (GNAT) |
| ADB | HP 100LX Organizer Appointment database |
| 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 | After Dark MultiModule screensaver |
| ADM | Windows NT policy template |
| ADN | Lotus 1-2-3 Add-In file |
| ADP | FaxWorks Faxmodem setup file |
| ADP | Astound Dynamite file |
| ADR | After Dark Randomizer screensaver |
| ADR | Smart Address address book |
| ADS | Ada source text specification file (GNAT) |
| ADT | HP NewWave datafile for card applications |
| ADT | AdTech Fax file |
| ADX | Dynazip Active Delivery script |
| ADX | Lotus Approach dBase Index |
| ADX | Archetype Designer Document |
| AF2 | ABC FlowCharter 2.0 Flowchart |
| AF3 | ABC Flowchart |
| AFC | Apple Sound file |
| AFI | Truevision Bitmap graphic |
| AFM | Adobe font metrics |
| AFM | HP NewWave Cardfile application |
| AG | Applix graphic |
| AI | Adobe Illustrator drawing |
| AI | Corel Trace 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 | ACDSee Image Sequence |
| AIS | Velvet Studio Instruments file |
| AIS | Xerox Arry of Intensity Samples Graphic |
| AIX | HP NewWave Cardfile Application data |
| AKW | Contains all A-keywords in the RoboHELP Help Project Index Designer not associated with topics |
| ALAW | European Telephony audio |
| ALIAS | Alias Image |
| ALB | JASC Image Commander album |
| ALL | Arts & Letters Library |
| ALL | WordPerfect for Windows General printer information file |
| ALS | Alias Image |
| ALT | WordPerfect Library Menu |
| AM | Applix SHELF Macro |
| AMF | Music file (Advanced Module Format) |
| AMG | AMGC Compressed archive |
| AMG | ACTOR System image |
| AMS | Velvet Studio music module (MOD) file |
| AMS | Extreme's Tracker module |
| 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 |
| AOS | Nokia 9000 Add-on software |
| AP | Applix Presents file |
| AP | WHAP Compressed Amiga archive |
| APC | Lotus 1-2-3 Printer driver |
| APD | Lotus 1-2-3 Printer driver |
| APF | Lotus 1-2-3 Printer driver |
| API | Application Program Interface; used by Adobe Acrobat |
| API | Lotus 1-2-3 Printer driver |
| APL | APL Workspace file |
| APP | Symphony Add-in Application |
| APP | dBase Application Generator Object |
| APP | DR-DOS Executable Application |
| APP | FoxPro Generated Application |
| APR | Employee Appraiser Performance Review file |
| APR | Lotus Approach 97 View file |
| APS | Microsoft Visual C++ file |
| APT | Lotus Approach Data view file |
| APX | Lotus Approach Paradox-Specific information file |
| APX | Borland C++ Appexpert database |
| AQ | Applix data |
| ARC | LH ARC (old version) compressed archive |
| ARC | SQUASH Compressed archive |
| ARF | Automatic Response file |
| ARI | ARI Compressed archive |
| ARI | Aristotle audio file |
| 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 | Xara Studio drawing |
| 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 |
| ARX | ARX Compressed Archive |
| AS | Applix Spreadsheet |
| ASA | Microsoft Visual InterDev file |
| ASC | ASCII text file |
| ASC | PGP armored encrypted file |
| ASD | WinWord AutoSave file |
| ASD | Lotus 1-2-3 Screen driver |
| ASD | Microsoft Advanced Streaming Format (ASF) description file; opens with NSREX |
| ASD | Astound Presentation |
| ASE | Velvet Studio Sample file |
| ASF | Microsoft Advanced Streaming Format |
| ASF | StratGraphics Datafile |
| ASF | Lotus 1-2-3 Screen font |
| ASH | TASM 3.0 Assembly language header |
| ASI | Borland C++/Turbo C Assembler Include file |
| ASM | Assembler Language source file |
| ASM | Pro/E assembly file |
| ASO | Astound Dynamite Object |
| ASP | Active Server Page (an HTML file containing a Microsoft server-processed script) |
| ASP | Procomm Plus setup and connection script |
| ASP | Astound Presentation |
| AST | Astound multimedia file |
| AST | Claris Works "assistant" file |
| ASV | DataCAD Autosave file |
| ASX | Cheyenne Backup script |
| ASX | Microsoft Advanced Streaming Redirector file |
| ASX | Video file |
| 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 | Sun/NeXT/DEC/UNIX sound file |
| AU | Audio U-law |
| AUX | TeX/LaTeX Auxilliary Reference file |
| AUX | ChiWriter Auxilliary Dictionary file |
| AVA | Avagio Publication |
| AVB | Inculan Anti-Virus virus infected file |
| AVI | Microsoft Audio Video Interleaved file for Windows movie |
| AVR | Audio Visual Research file |
| AVS | Application Visualization System file |
| AVS | Stardent AVS-X Image |
| AW | HP AdvanceWrite Text file |
| AW | Applix Words file |
| AWD | FaxView Document imagine |
| AWK | AWK Script/Program |
| AWM | Animation Works Movie |
| AWR | Telsis file for digitally stored audio |
| AWS | StatGraphics Data file |
| AXX | ARJ compressed file from a multi-volume archive (xx = a number from 01 to 99) |
| A3L | Authorware 3.x library |
| A4L | Authorware 4.x library |
| A5L | Authorware 5.x library |
| A3M | Authorware MacIntosh file (unpackaged) |
| A4M | Authorware MacIntosh file (unpackaged) |
| A4P | Authorware file (packaged without runtime) |
| A3W | Authorware Windows file (unpackaged) |
| A4W | Authorware Windows file (unpackaged) |
| A5W | Authorware Windows file (unpackaged) |
| B | Applause Batch list |
| BAD | Oracle bad file |
| BAK | Backup file |
| BAL | Ballade Music score |
| 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 | Batch Process Object (dBase Application Generator) |
| BCH | Datalex Entry Point 90 Data file |
| 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 | West Point Bridge Designer file |
| BDF | Egret Datafile |
| 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 | BitFax graphic |
| 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 | Bibliography file (ASCII) |
| BIB | TeX/BibTeX Literature Database |
| BIB | Database |
| BIF | GroupWise initialization file |
| BIF | Image Capture Board Binary Image black & white graphic |
| BIFF | XLITE 3D file |
| BIN | Binary file |
| BIO | OS/2 Bios file |
| BIT | X11 Bitmap |
| BK | Backup file (Generic) |
| BK | JetFax Faxbook file |
| BK$ | Backup file (Generic) |
| BK! | WordPerfect for Windows Document backup |
| 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 | IBM BookManager Read bookshelf file |
| BKS | Microsoft Works Spreadsheet Backup |
| BKW | FontEdit Fontset mirror image |
| BLD | BASIC Bloadable picture file |
| BLK | Alias Wavefront Image |
| BLK | WordPerfect for Windows Temporary file |
| BM | Windows system Bitmap |
| BMF | Corel Gallery file |
| BMK | Windows Help bookmark |
| BMP | Windows or OS/2 bitmap |
| BM1 | Apogee BioMenace data |
| BNK | AdLib Instrument Bank file |
| 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 |
| BRD | Eagle Layout file |
| BRK | Brooktrout Fax-Mail file |
| BRX | A file for browsing an index of multimedia options (pictures, sound, text, videos) on a CD-ROM |
| BRZ | DbBRZ file for very large Db backup or restore |
| BSA | BSARC Compressed archive |
| BSC | Apple II Compressed archive |
| BSC | Fortran Pwbrmake Object |
| BSC | MS Developer Studio (MSDev) browser information |
| BSP | Quake map file |
| BS1 | Apogee Blake Stone data file |
| BS | Microsoft Bookshelf Find Menu shell extension |
| BTM | Batch file used by Norton Utilities |
| 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 | SGI Black and White image file |
| BW | Silicon Graphics Raw red,green and blue bytes file |
| BWB | Visual Baler Spreadsheet application |
| BWR | Kermit Beware buglist |
| BWV | Business Wave file |
| BYU | BYU Movie |
| 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) |
| B_W | Atari/Macintosh black and white graphic |
| B&W | Atari/Macintosh black and white graphic |
| B&W | 1st Reader Mono binary screen image |
| C | C 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 |
| CAL | CALS Compressed Bitmap |
| CAL | SuperCalc 4/5 Spreadsheet |
| CAL | Calendar schedule data file |
| CAM | Casio camera file |
| CAN | Navigator Fax |
| CAP | Ventura Publisher Caption |
| CAP | Compressed music file |
| CAP | Telix Session Capture file |
| CAS | Comma-delimited ASCII file |
| CAT | Quicken IntelliCharge categorization file |
| CAT | dBase Catalogue file |
| CB | Microsoft clean boot file |
| CBC | CubiCalc Fuzzy Logic System file |
| CBI | Column binary file (used in IBM mainframe systems) |
| CBL | Cobol Source code |
| CBM | XLib Compiled Bitmap |
| CBT | Generic Computer based training file |
| CC | Visual dBASE custom class file |
| CC | C++ Source code |
| CCA | cc:mail file |
| CCB | Visual Basic Animated Button configuration file |
| CCC | Curtain Call Native bitmap graphic |
| CCF | Multimedia Viewer configuration file used in OS/2 |
| CCF | Symphony Communications Configuration file |
| CCH | Corel Chart |
| CCL | Intalk Communication Command Language |
| CCM | Lotus CC:Mail "box" file (for example, INBOX.CCM) |
| CCO | CyberChat data file |
| CCO | XBTX Graphics |
| CCT | Macromedia Director Shockwave cast file |
| CDA | CD Audio Track |
| CDB | Clipboard file |
| CDB | CardScan Database |
| CDB | TCU Turbo C Utilities Main database |
| CDF | Netcdf Graphic file |
| CDF | Microsoft Channel Definition Format |
| CDI | Phillips Compact Disk Interactive file |
| CDK | Atari Calamus Document |
| CDM | Visual dBASE custom data module |
| CDR | Corel Draw Vector drawing file |
| CDR | Raw Audio-CD data file |
| CDT | Corel Draw template |
| CDT | CorelDraw Data file |
| CDX | Corel Draw compressed drawing |
| CDX | Microsoft's Visual FoxPro index |
| CE | The FarSide Computer Calendar Main CE file |
| CEG | Tempra Show Bitmap graphic |
| CEL | CIMFast Event Language file |
| CEL | AutoDesk Animator Cel Image |
| CER | Certificate file (MIME x-x509-ca-cert) |
| CF | Imake Configurtion file |
| CFB | Comptons Multimedia file |
| CFG | Configuration file |
| CFL | CorelFLOW Chart |
| CFM | ColdFusion template |
| CFM | Visual dBASE Windows customer form |
| CFM | Corel FontMaster file |
| 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 | OS/2 configuration file |
| CH | Clipper 5 Header |
| CH3 | Harvard Graphics 3.0 Chart |
| CH4 | Charisma 4.0 Presentation |
| CHD | FontChameleon Font descriptor |
| CHF | pcAnywhere remote control file |
| CHI | ChiWriter Document |
| CHK | File fragments saved by Windows Disk Defragmenter or ScanDisk |
| CHK | WordPerfect for Windows Temporary file |
| CHL | Configuration History Log |
| CHM | Compiled HTML file |
| CHN | Ethnograph Data file |
| CHP | Ventura Publisher Chapter file |
| CHR | Character Sets (Font file) |
| CHT | ChartViewer file |
| CHT | Harvard Graphics vector file |
| CHT | ChartMaster dBase Interface file |
| CIF | CalTech Intermediate Graphic |
| CIF | Easy CD Creator image |
| CIF | pcAnywhere caller file |
| 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 |
| CKB | Borland C++ Keyboard mapping file |
| 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 |
| CL | Generic LISP Source code |
| CLASS | Java class |
| CLG | Disk Catalog database |
| CLL | Cricket Software Clicker File |
| CLO | Cloe Image |
| CLP | Windows Clipboard |
| CLP | Quattro Pro Clip art |
| CLP | Clipper 5 Compiler Script |
| CLR | 1st Reader Binary color screen image |
| CLR | PhotStyler Color defintion |
| CLS | Visual Basic Class Module |
| CLS | C++ Class Definition |
| CM | Craftman Data |
| CMD | Command file for Windows NT (similar to a DOS .BAT file), OS/2 |
| CMD | DOS CP/M command file |
| CMD | dBase-II program file |
| CMD | 1st Reader External Command Menu |
| CMF | Corel Metafile |
| CFM | Creative FM-Music |
| CMG | Chessmaster saved game |
| CMK | Card Shop Plus file |
| CMM | CEnvi Batch file |
| CMP | JPEG Bitmap |
| CMP | Address document |
| CMP | CorelDRAW 4.0 Postscript Printer Header |
| CMP | Route 66 Address Document |
| CMP | Microsoft Word for DOS User dictionary |
| 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 | Word for Windows Data conversion support file |
| CNV | WordPerfect for Windows Temporary file |
| COB | trueSpace 2 object |
| COB | COBOL Source code |
| COD | Microsoft C compiler output as displayable machine language/assembler with original C as comments |
| COD | FORTRAN Compiled code |
| COD | dBase Application Generator Template source file |
| COD | Video Text file |
| COL | AutoDesk Animator Color Palette |
| COL | Microsoft Multiplan Spreadsheet |
| COM | Command file (program) |
| CON | Simdir Configuration file |
| CP8 | CP8 256 Gray Scale image |
| CPD | Corel PrintOffice file (drawing) |
| CPD | Fax Cover document |
| CPD | Complaints Desk Script |
| CPE | Fax Cover document |
| CPF | The Complete Fax (Fax file) |
| CPI | Microsoft MS-DOS code page information |
| CPI | ColorLab Processed Image bitmap |
| CPJ | CeQuadrant CD Project |
| CPL | Control Panel Module |
| CPL | Compel Presentation |
| CPL | Corel color palette |
| CPO | Corel Print House file |
| CPP | C++ Source code |
| CPP | CA-Cricket Presents presentation |
| CPR | Corel Presents presentation |
| CPS | Central Point PC Tools Backup |
| CPS | Coloured postscript |
| CPT | Corel Photo-Paint image |
| CPT | Macintosh Compressed Archive |
| CPT | dBase Encrypted Memo |
| CPT | CA-Cricket Presents Template |
| CPX | Corel Presentation Exchange compressed drawing |
| CPZ | COMPOZ Music Text |
| CRD | Microsoft Windows 3.x Cardfile |
| CRF | Zortech C++ cross-reference |
| CRP | Corel Presents run-time presentation |
| CRP | Visual dBASE custom report |
| CRP | dBase IV Encrypted database |
| CRS | WordPerfect 5.1 for Windows File Conversion resource |
| CRT | Certificate file |
| CRT | Oracle Terminal settings information |
| CRU | CRUSH Compressed archive |
| CSA | Comma deliminated text |
| CSC | Corel script |
| CSG | Statistica/w Graph file |
| CSM | Borland C++ 4.5 Precompiled header |
| CSP | PC Emcee On-Screen image |
| CSS | Stats+ Datafile |
| CSS | Statistica/w Datasheet |
| CSS | Cascading Style Sheet (MIME) |
| CST | Macromedia Director "Cast" (resource) file |
| CSV | Comma-separated values file |
| CSV | CompuShow Adjusted EGA/VGA Palette |
| CT | Scitex CT bitmap |
| CT | A graphic file associated with the Paint Shop Pro Graphic Editor |
| CTC | PC Installer Control |
| CTF | Symphony Character code translation |
| CTL | Used in general for files containing control information. FAXWorks uses it to keep information about each fax sent and received. |
| CTL | dBase IV Control |
| CTX | Visual Basic User control binary file |
| CTX | Pretty Good Privacy (PGP) Ciphertext file |
| CTX | Microsoft Online Course Text |
| CUE | Microsoft Cue Cards data |
| CUR | Windows Cursor |
| CURSOR | Sun Microsystems Cursor |
| CUT | Dr Halo Bitmap |
| CV | Corel Versions archive |
| CV | Microsoft CodeView information screen |
| 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 |
| C-- | Sphinx C-- Source code |
| C00 | Ventura Publisher Print file |
| C01 | Typhoon wave |
| C86 | Computer Innovation (C86) Source code |
| DAO | Windows Registry Backup |
| DAT | Data file |
| DAT | WordPerfect Merge Data |
| DAT | Extension used for some MPEG files |
| DB | Borderland's Paradox 7 table database |
| DBC | Microsoft's Visual FoxPro database container file |
| DBF | A dBASE file, a format originated by Ashton-Tate, but understood by Act!, Clipper,FoxPro, Arago, Wordtech, xBase, and similar database or database-related products. |
| DBF | Enable database (can be opened with Excel 97) |
| DBF | Oracle 8.1.x tablespace file |
| DBK | dBase Database Backup |
| DBQ | Paradox Memo |
| DBT | dBase Text Memo |
| DBX | DataBeam image |
| DBX | Microsoft's Visual Foxpro Table file |
| DCA | Visual Basic Active designer cache |
| DCIM | Digital Imaging and Communications in Medicine (image and data) |
| DCM | DCM module |
| DCR | Shockwave file |
| DCS | Desktop Color Separation file |
| DCT | Microsoft's Visual FoxPro database container file |
| DCU | Delphi compiled unit |
| DCX | Microsoft's Visual FoxPro database container file |
| DCX | Fax image (based on PCX) |
| DCX | Macro file |
| DC5 | DataCAD Drawing |
| DDF | Btrieve or Xtrieve Data Definition File, which contains metadata describing a Btrieve or Xtrieve file |
| DDIF | Digital Equipment or Compaq file. Used for storing images and their word processing documents |
| DEF | SmartWare II data |
| DEF | C++ definition file |
| DEFI | Oracle 7 de-install script |
| DEM | A file with USGS standards for Digital Elevation Models |
| DEP | Visual Basic Setup Wizard Dependency file |
| DER | Certificate file |
| DEWF | Macintosh SoundCap/SoundEdit recorded instrument file |
| DGN | Microstation95 CAD drawing |
| DIB | Device-independent bitmap |
| DIC | Dictionary file |
| DIF | Data Interchange Format spreadsheet |
| DIG | Digilink file |
| DIG | Sound Designer I audio |
| DIR | Macromedia Director file |
| DIS | Ray Tracer file |
| DIZ | Description file |
| DL | Image |
| DLG | C++ Dialogue Script |
| DLL | Dynamic-link library file |
| DLS | Downloadable sound |
| DMD | Visual dBASE data module |
| DMF | X-Trakker music module (MOD) |
| DOB | Visual Basic User document |
| DOC | FrameMaker or FrameBuilder document |
| DOC | WordStar document |
| DOC | WordPerfect document |
| DOC | Microsoft Word document |
| DOC | DisplayWrite document |
| DOT | Microsoft Word document template |
| DOX | Visual Basic User document binary form |
| DPL | Borland Delphi 3 packed library |
| DPR | Borland Delphi project header |
| DRAW | Acorn's object-based vector image |
| DRV | Driver |
| DRW | Micrografx Designer/Draw |
| DRW | Lotus Freelance Image |
| DRW | Pro/E drawing |
| DS4 | Micrografx Designer Image |
| DR9 | Directory file |
| DSF | Micrografx Designer v7.x file |
| DSG | DooM saved game |
| DSM | Dynamic Studio music module (MOD) |
| DSN | ODBC Data source |
| DSP | Microsoft Developer Studio project |
| DSQ | Corel QUERY |
| DSR | Visual Basic Active designer file |
| DST | Embroidery machines graphic file |
| DSW | Microsoft Developer Studio workspace file |
| DSX | Visual Basic Active designer binary file |
| DTA | World Bank's STARS data |
| DTD | SGML Document Type Definition (DTD) file |
| DTED | Digital terrain elevation data (geographic data format) |
| DTM | DigiTrakker module |
| DTF | Symantec Q&A relational database |
| DUN | Microsoft Dial-up Networking Export file |
| DUP | Duplicate Backup |
| DV | Digital video (MIME) |
| DVI | TeX binary file |
| DWD | DiamondWare digitized file |
| DWF | Vector graphic (Autodesk) |
| DWG | Autocad Drawing |
| DWG | AutoCAD drawing, or older Generic CADD drawing file |
| DX | Digital Electric Corporation (DEC) Data exchange file |
| DXF | Drawing Interchange (eXchange) format,a text representation of the binary DWG format |
| DXF | Data Exchange File |
| DXR | Macromedia Director protected (not editable) movie file |
| D64 | Commodore 64 emulator disk image |
| ED6 | EDMICS image |
| EDA | Ensoniq ASR disk image |
| EDB | ROOTS3 Geneological data |
| EDE | Ensoniq EPS disk image |
| EDD | Element Definition document (FrameMaker+SGML documents) |
| EDK | Ensoniq KT disk image |
| EDQ | Ensoniq SQ1/SQ2/KS32 disk image |
| EDS | Ensoniq SQ80 disk image |
| EDV | Ensoniq VFX-SD disk image |
| EFA | Ensoniq ASR file |
| EFE | Ensoniq EPS file |
| EFK | Ensoniq KT file |
| EFQ | Ensoniq SQ1/SQ2/KS32 file |
| EFS | Ensoniq SQ80 file |
| EFV | Ensoniq VFX-SD file |
| EL | eMac Lisp Source code |
| ELC | eMac Lisp Source code (byte-compiled) |
| EMD | ABT Extended MoDule |
| EMF | Enhanced Windows Metafile |
| EML | Microsoft Outlook Express mail message |
| ENC | Encore file |
| ENC | Video file |
| ENFF | Neutral Format |
| EPHTML | Enhanced Perl-parsed HTML |
| EPS2 | Adobe Level II Encapsulated Postscript |
| EPS | Encapsulated PostScript image file |
| EPSF | Encapsulated PostScript |
| EPSI | Adobe Encapsulated Postscript Interchange |
| ER1 | ERWin file |
| 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 |
| ESPS | ESPS audio |
| EUI | Ensoniq ESP family compacted disk image |
| EVY | Envoy document |
| EWL | Microsoft Encarta document |
| EXC | Microsoft Word Exclusion Dictionary file |
| EXE | Executable file (program) |
| F | FORTRAN file |
| F | Compressed file archive (FREEZE) |
| FAC | Face graphic |
| FAQ | Frequently Asked Questions document |
| FAR | Music module (MOD) (Farandole Composer) |
| 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 | Declaration file (FORTRAN) |
| FD | Field offsets for compiler (DataFlex) |
| FDB | Database (Navison Financials) |
| FDF | Forms Document (Adobe Acrobat) |
| FDW | Document form (F3 Design and Mapping) |
| FEB | Button Bar for Figure Editor (Microsoft WordPerfect for Windows) |
| FEM | CADRE Finite Element Mesh |
| FF | Outline Font description (AGFA CompuGraphics) |
| FFA | MS find fast file |
| FFF | Fax document (defFax) |
| FFF | GUS PnP bank file |
| 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) |
| FI | File Interface (FORTRAN) |
| FIF | Fractal Image |
| FIG | REND386/AVRIL file |
| FIL | File template (Application Generator) |
| FIL | File List Object (dBase Application Generator) |
| FIL | Overlay (Microsoft WordPerfect for Windows) |
| FIN | Print formatted text (Perfect Writer) |
| FIT | Graphic (FITS) |
| FIT | File index table (Microsoft Windows NT) |
| FITS | CCD camera image |
| FITS | Flexible Image Transport System file |
| FIX | Patch file (Generic) |
| FKY | Macro (Microsoft FoxPro) |
| FLA | Movie (Macromedia Flash) |
| FLB | Format library (Papyrus) |
| FLC | FLIC animation (AutoDesk) |
| FLD | File folder (Charisma) |
| FLF | Delived form (Corel Paradox) |
| FLF | License (Navison Financials) |
| FLI | FLIC animation (AutoDesk) |
| FLI | Font library (EmTeX) |
| FLF | Driver (OS/2) |
| FLM | Film Roll (AutoCAD) |
| FLO | FlowCharter file (MicroGrafx) |
| 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) |
| FLX | Compiled binary file (DataFlex) |
| FM | Spreadsheet (FileMaker Pro) |
| FM | FrameMaker Document (Adobe) |
| FM1 | Spreadsheet (Lotus 1-2-3, version 2.x) |
| FM3 | Device driver (Harvard Graphics, version 3.0) |
| FM3 | Spreadsheet (Lotus 1-2-3, version 3.x) |
| FMB | Binary source code for form, (Oracle, v4.x and later) |
| FMB | File Manager button bar (Microsoft WordPerfect for Windows) |
| FMF | Font or Icon (IBM LinkWay) |
| FMK | MakeFile (FORTRAN PowerStation) |
| FML | Mirror list (Oracle) |
| FMO | Compiled format (dBase IV) |
| FMT | Text format for form file (Oracle, v4.x and later) |
| FMT | Print file (Microsoft Schedule+) |
| FMT | Style sheet (Sprint) |
| FMX | Executable form, (Oracle,v4.x and later) |
| FN3 | Font (Harvard Graphics) |
| 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 | Font (Generic) |
| FON | Call log (Procomm Plus) |
| FON | System font (Generic) |
| FON | Dialing directory (Telix) |
| FOR | FORTRAN source code |
| FOR | Form (WindowBase) |
| FOT | Font-related file (Generic) |
| FOT | Installed TrueType font (Microsoft Windows Font Installer) |
| FP | Configuration file (FoxPro) |
| FP | FileMaker Pro file |
| FP1 | "Flying Pigs" screensaver datafile (Microsoft Windows 9.x) |
| FP3 | FileMaker Pro file |
| FPC | Catalog file (FoxPro) |
| FPT | FileMaker Pro file |
| FPT | Memo fields (Microsoft FoxPro) |
| FPW | Floorplan drawing (FloorPlan Plus for Windows) |
| FPX | Bitmap (FlashPix) |
| FR3 | Renamed dBaseIII+ form (dBase IV) |
| FRF | Font (FontMonger) |
| FRG | Uncompiled report (dBase IV) |
| FRM | Form (Generic) |
| FRM | Document (FrameMaker or FrameBuilder) |
| FRM | Executable file (Oracle,v3.0 and earlier) |
| FRM | Form (Visual Basic) |
| FRM | Merge form (Microsoft WordPerfect for Windows) |
| FRM | Symbol Report (DataCAD) |
| FRO | Compiled report (dBase IV) |
| FRP | Form (PerForm PRO Plus) |
| FRS | Screen Font Resource (Microsoft Wordperfect for Windows) |
| FRT | Report menu (FoxPro) |
| FRX | Form stash file (Visual Basic) |
| FRX | Report (Microsoft FoxPro) |
| FSF | fPrint Audit Tool |
| FSL | Paradox 7 form (Borderland) |
| FSL | Form (Paradox for Windows) |
| FSL | Saved form (Corel Paradox) |
| FSM | Sample file (Farandoyle) |
| FST | Linkable program (dBFast) |
| FSX | Data (Lotus 1-2-3) |
| FT | Full text index (Lotus Notes) |
| 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) |
| FW | Database (Framework II) |
| FW2 | Database (Framework II) |
| FW3 | Database (Framework III) |
| FW4 | Database (Framework IV) |
| 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) |
| 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) |
| G | Data chart (APPLAUSE) |
| GAL | Album (Corel Multimedia Manager) |
| GAM | Fax document (GammaFax) |
| GBL | Global definitions (VAXTPU Editor) |
| 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 | Genealogical data (GEDCOM) |
| GED | Graphic Environment Document (drawing) |
| GED | Graphics editor native format (Arts & Letters) |
| GED | Graphics editor file (EnerGraphics) |
| GEM | Metafile (GEM) |
| GEM | Vector graphics (Ventura Publisher) |
| GEN | Generated text (Ventura Publisher) |
| GEN | Compiled template (dBase Application Generator) |
| GEO | Geode (Geoworks) |
| GetRight | Unfinished-Download (GetRight) |
| GFB | Compressed gif image (GIFBLAST) |
| GFC | Patton&Patton Flowcharting 4 flowchart |
| GFI | Graphics Link presentation (Genigraphics) |
| GFT | Font (NeoPaint) |
| GFX | Genigraphics Graphics Link presentation |
| 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) |
| GLM | Datafile (Glim) |
| GLS | Datafile (Across) |
| GLY | Glossary (Microsoft Word) |
| GMF | CGM Graphics (APPLAUSE) |
| GMP | Tile map (Geomorph) (SPX) |
| GNA | Graphics Link presentation (Genigraphics) |
| 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) |
| GPH | Graph (Lotus 1-2-3/G) |
| GPK | Program package (Omnigo) |
| GR2 | Screen driver (Microsoft Windows 3.x) |
| GRA | Graph (Microsoft) |
| GRA | Datafile (SigmaPlot) |
| GRB | Shell Monitor (MS-DOS v5.0) |
| GRD | Image processing grid (CHIPS) |
| GRF | Grapher (Golden Software) graph |
| GRF | Graph (Charisma Graph Plus) |
| GRP | Program Manager Group (Microsoft) |
| GRP | Pictures group (PixBase) |
| GRY | Raw graphic (GREY) |
| GS1 | Presentation (GraphShow) |
| GSD | Vector graphic (Professional Draw) |
| GSM | Audio stream Raw GSM (6.10 audio stream) |
| 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) |
| GSW | Worksheet (GraphShow) |
| GTK | Music module (Graoumftracker) (old) (MOD) |
| GT2 | Music module (Graoumftracker) (new) (MOD) |
| GUP | Data (PopMail) |
| GWX | Graphics Link presentation (Genigraphics) |
| GWZ | Graphics Link presentation (Genigraphics) |
| GXL | Graphics library (Genus) |
| GZ | Compressed file (Unix gzip) |
| 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) |
| H | Program header (C) |
| HA | Compressed archive (HA) |
| HAP | Compressed archive (HA) |
| HBK | Handbook (MathCad) |
| HCM | Configuration file (IBM HCM) |
| HCOM | Sound Tools file (HCOM) |
| HCR | Production configuration file (IBM HCD/HCM) |
| HDF | National Center for Supercomputing Applications (NCSA) Geospatial Hierarchical Data |
| HDF | Help file (Help development kit) |
| HDL | Alternate download listing (ProComm Plus) |
| HDR | Database header (Pc-File+) |
| HDR | Datafile (Egret) |
| HDR | Message header text (ProComm Plus) |
| HDR | Message header text (1st Reader) |
| HDW | Vector graphics (Harvard Draw) |
| HDX | Help index (AutoCAD) |
| HDX | Help index (Zortech C++) |
| 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 | Help system map (Generic) |
| HH | Header file (C++) |
| HHH | Precompiled header (Power C) |
| HHP | Help information for remote users (ProComm Plus) |
| HLB | Help library (VAX) |
| HLP | Help file (Generic) |
| HLP | Windows Help file (DataCAD) |
| HMM | Alternate mail read option menu (ProComm Plus) |
| HNC | Program files (CNC) |
| HOG | Lucas Arts Dark Forces WAD file |
| HP8 | Ascii text Roman8 character set (NewWave Write) |
| HPF | HP LaserJet font (Adobe Pagemaker) |
| HPG | HPGL Plotter vector graphics (AutoCAD) |
| HPG | HPGL Plotter vector graphics (Harvard Graphics) |
| HPI | Font information (GEM) |
| HPJ | Help Project file (Visual Basic) |
| HPK | Compressed archive (HPACK) |
| HPM | Emm text (HP NewWave) |
| HPM | Alternative menu for privileged users (ProComm Plus) |
| HPP | Program header (C++) |
| HPP | Header file (Zortech C++) |
| HQX | BinHex (Macintosh 4.0) |
| HRF | Rastor graphic (Hitachi) |
| HRM | Alternate menu for limited users (ProComm Plus) |
| HS2 | Monochrome image (Postering) |
| HSI | Graphic (Handmade Software, Inc.) |
| HST | History file (Generic) |
| HST | History file (ProComm Plus) |
| HT | HyperTerminal file |
| 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) |
| HXM | HAM extension (Descent2) |
| HXM | Alternate protocal selection menu (ProComm Plus) |
| HXX | Header file (C++) |
| HY1 | Hyphenation algorythm (Ventura Publisher) |
| HY2 | Hyphenation algorythm (Ventura Publisher) |
| HYC | Datafile (Microsoft WordPerfect for Windows) |
| HYD | Hyphenation dictionary (Microsoft WordPerfect for Windows) |
| HYP | Compressed archive (HYPER) |
| H! | On-line Help (Flambeaux Help!) |
| H++ | Header file (C++) |
| H-- | Header file (Sphinx C--) |
| I | Intermediate file (Borland C++) |
| IAX | Bitmap (IBM Image Acess eXecutive) |
| IBM | Compressed archive (ARCHDOS, IBM Internal only) |
| ICA | Citrix file |
| ICA | Bitmap graphic (Image Object Content Architecture) |
| ICB | Targa bitmap |
| ICC | Printer file (Kodak) |
| ICL | Icon Library (Generic industry standard) |
| ICM | Image Color Matching profile |
| ICN | Icon source code |
| ICO | Icon (Microsoft Windows 3.x) |
| 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) |
| IDQ | Data Query (Internet) |
| IDW | Vector graphic (IntelliDraw) |
| IDX | Relational database index (Microsoft FoxPro) |
| IDX | Relational database index (Symantec Q&A) |
| IDX | Microsoft Outlook Express file |
| IFD | Form (JetForm Design) |
| IFF | Interchange file, (Amiga ILBM) |
| IFF | Image (Sun TAAC/SDSC Image Tool) |
| IFP | Script (KnowledgeMan) |
| IFS | Compressed fractal image (Yuvpak) |
| IFS | System file (OS/2) |
| IGES | Initial Graphics Exchange Specification (Generic) |
| IGF | Metafile (Inset Systems) |
| IIF | Interchange file (QuickBooks for Windows) |
| ILB | Datafile (Scream Tracker) |
| ILBM | Bitmap (graphic image) |
| ILK | Program outline (Microsoft ILink incremental linker) |
| IM8 | Raster graphic (Sun Microsystems) |
| IMA | Image (WinImage) |
| IMA | Vector graphic (EGO,Chart) |
| IMG | Image (GEM) |
| IMG | Bitmap graphic (Ventura Publisher) |
| IMP | Spreadsheet (Lotus Improv) |
| IMQ | Image presentation (ImageQ) |
| 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 | Index (dBase IV) |
| INF | Information file (Generic) |
| INF | Type I LaserJet font information file |
| INF | Install script (Generic) |
| INI | Initialization file (Generic) |
| INI | Setup file (MWave DSP synth's mwsynth.ini GM) |
| INI | Bank setup file (Gravis UltraSound) |
| INK | Pantone reference fills file (CorelDRAW) |
| 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 (Microsoft WordPerfect for Windows) |
| INS | Installation script (1st Reader) |
| INS | Instrument music file (Adlib) |
| INT | Intermediate executable code (Produced when a source program is syntax-checked) |
| INT | Interfaced units (Borland) |
| 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) |
| IQY | Internet inquiry (Microsoft) |
| ISO | Lists the files on a CD-ROM; based on the ISO 9660 CD-ROM file system standard |
| IRS | Resource file (Microsoft WordPerfect for Windows) |
| ISD | Spell checker dictionary (RapidFile) |
| ISH | Compressed archive (ISH) |
| ISO | ISO (International Standards Organization table, aka: ISO) |
| ISP | Sign-up file(X-Internet) |
| IST | Instrument file (Digitaltracker) |
| ISU | Uninstall script (InstallShield) |
| IT | Settings file (intalk) |
| ITF | Interface file (JPI Pascal TopSpeed) |
| IT | Music module (MOD) (Impulse Tracker) |
| ITI | Instrument file (Impulse Tracker) |
| ITS | Sample file (Impulse Tracker) |
| ITS | Internet document set (possibly a Microsoft 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 | Screensaver (Idlewild) |
| IW | Presentation flowchart (IconAuthor-HSC Interactive) |
| IWA | Text file (IBM Writing Assistant) |
| IWC | Install Watch document |
| IWP | Text file (Wang) |
| IZT | Binary token file (IZT) |
| JAR | Java ARchive (a compressed file for applets and 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) |
| JFF | JPEG image |
| JIF | JPEG image |
| JFIF | JPEG image |
| JMP | Discovery chart-to-statistics (SAS JMP) |
| JN1 | Jill of the Jungle data (Epic MegaGames) |
| 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 |
| JS | JavaScript source code |
| JSP | A HTML page containing a reference to a Java servlet |
| JTF | JPEG bitmap |
| JTF | Fax document (Hayes JT Fax) |
| JTF | Bitmap graphic (JPEG Tagged Interchange Format) |
| JW | Text document (JustWrite) |
| JWL | Library (JustWrite) |
| JZZ | Spreadsheet (Jazz) |
| J62 | Ricoh camera file |
| K25 | Kurzweil 2500 sample |
| KAR | Karaoke MIDI file (text+MIDI) |
| KDC | Kodak Photo-Enhancer |
| KEY | DataCAD Icon toolbar file |
| KFX | KoFax Group 4 image |
| KIZ | Kodak digital postcard files |
| KKW | Contains all K-keywords in the RoboHELP Help project Index Designer not associated with topics |
| KMP | Korg Trinity KeyMaP file |
| KQP | Konica camera native files |
| KR1 | Kurzweil 2000 sample (multi-floppy) |
| KRZ | Kurzweil 2000 sample |
| KSF | Korg Trinity Sample File |
| KYE | Kye game data |
| LBM | Deluxe Paint bitmap |
| LBT | Microsoft FoxPro labels |
| LBX | Microsoft FoxPro labels |
| LDB | Microsoft Access lock file |
| LDL | Corel Paradox Delivered library |
| LEG | Legacy document |
| LES | Logitech Entertainment system game profiles (same as REG file) |
| LFT | 3D Studio (DOS) loft file |
| LGO | Paintbrush logo file |
| LHA | Alternate file suffix for LZH |
| LIB | Library |
| LIN | DataCAD Line type file |
| LIS | Output file produced by a Structured Query Reporting (SQR) program |
| LLX | Laplink Exchange Agent |
| LNK | Windows shortcut file |
| LOG | Log file |
| LPD | Helix Nuts and Bolts file |
| LRC | Intel Video Phone file |
| LSL | Corel Paradox Saved library |
| LSP | AutoLISP, CommonLISP, and othe LISP language files |
| LST | List file |
| LU | ThoughtWing Library Unit file |
| LVL | Parallax Software's Miner Descent/D2 Level Extension |
| LWLO | Lightwave Layered Object file |
| LWOB | Lightwave Object file |
| LWP | Lotus Wordpro 96/97 file |
| LWSC | Lightwave Scene file |
| LYR | DataCAD Layer file |
| LZH | LH ARC compressed archive |
| LZS | Skyroads data file |
| M1V | MPEG-related file (MIME type 'mpeg') |
| M3D | Corel Motion 3D animation |
| M3U | MPEG URL (MIME audio file) |
| MAT | Matlab variables binary file |
| MAC | MacPaint image |
| MAD | Microsoft Access module |
| MAF | Microsoft Access Form |
| MAG | A graphics file format found in some Japanese files |
| MAGIC | Magic Mail Monitor configuration file |
| MAK | Visual Basic or MS Visual C++ Project |
| MAM | Microsoft Access Macro |
| MAN | Unix Manual page output |
| MAP | Map file |
| MAP | Duke Nukem 3D WAD game file |
| MAQ | Microsoft Access Query |
| MAR | Microsoft Access Report |
| MAS | Lotus Freelance Graphics Smartmaster file |
| MAT | Microsoft Access Table |
| MAUD | MAUD sample format |
| MAX | KINETIX's 3D Studio MAX file format for a 3D scene |
| MAX | Paperport file |
| MAX | OrCAD layout file |
| MAZ | Hover maze data |
| MAZ | A file format use by Division's dVS/dVISE |
| MB1 | Apogee Monster Bash data file |
| MBOX | Berkeley Unix mailbox format |
| MBX | Extension Microsoft Outlook adds to saved email, Eudora mailboxes |
| MCC | Dialer10 calling card |
| MCC | Dialer10 calling card |
| MCP | metrowerks CodeWarrior project file |
| MCR | DataCAD Keyboard macro file |
| MCW | Microsoft Word for Macintosh document |
| MDA | Microsoft Access add-in |
| MDA | Microsoft Access workgroup for version 2 |
| MDB | Microsoft Access database |
| MDE | Microsoft Access MDE file |
| MDL | Digital Tracker music module (MOD) file |
| MDL | Quake model file |
| MDN | Microsoft Access blank database template |
| MDW | Microsoft Access Workgroup |
| MDZ | Microsoft Access wizard template |
| MED | Music Editor, OctaMED music module (MOD) file |
| MER | Format for interchanging spreadsheet/database data; recognized by Filemaker, Excel, and others |
| MET | Presentation Manager metafile |
| MFG | Pro/ENGINEER manufacturing file |
| MGF | A file in a Materials and Geometry Format |
| MHTM | MHTML document (MIME) |
| MHTML | MHTML document (MIME) |
| MI | Miscellaneous |
| MIC | Microsoft Image Composer file |
| MID | MIDI music |
| MIF | Adobe FrameMaker Interchange Format |
| MIFF | Machine Independent Format File |
| MIM | A multipart file in the Multi-Purpose Internet Mail Extensions (MIME) format; often created as the result of sending e-mail with attachments in AOL. The files in a multipart MIM file can be "opened" (unarchived and separated into individual files) using Winzip or a similar program. |
| MIME | See MIM. |
| MLI | A file in 3D Studio's Material-Library format |
| MME | A multipart file in the Multi-Purpose Internet Mail Extensions (MIME) format; often created as the result of sending e-mail with attachments in AOL. The files in a multipart MME file can be "opened" (unarchived and separated into individual files) using Winzip or a similar program. |
| MMF | Meal Master Format, a recipe catologing format |
| MMF | Microsoft Mail File |
| MMG | Beyond 20/20 table or aggregate data file |
| MMM | Microsoft Multimedia Movie |
| MMP | Mindmapor MindManager file |
| MN2 | Descent2 Mission File |
| MND, MNI | Mandelbrot for Windows |
| MNG | Multi-image Network Graphics |
| MNT | Microsoft FoxPro menus |
| MNU | Visual dBASE menu file |
| MNU | Intertel Systems Interact menu file |
| MNX | Microsoft FoxPro menus |
| MOD | Music module file |
| MOD | Microsoft Multiplan spreadsheet |
| MOD | Amiga/PC tracker module |
| MOV | QuickTime for Windows movie |
| MP2 | MPEG Audio Layer 2 |
| MP3 | MPEG Audio Layer 3 (AC3) |
| MPA | MPEG-related file (MIME type 'mpeg') |
| MPE | MPEG animation |
| MPEG | MPEG animation |
| MPG | MPEG animation |
| MPP | Microsoft Project file |
| MPP | CAD drawing file format |
| MPR | Microsoft FoxPro menus (compiled) |
| MP2 | MPEG Audio Layer 2 file (MIME video file) |
| MP3 | MPEG Audio Layer 3 (AC3) file |
| MRI | MRI Scan |
| MSA | Magic Shadow Archive |
| MSDL | Manchesters Scene Description Language |
| MSG | Microsoft Mail message |
| MSI | Windows Installer package |
| MSN | Microsoft Network document |
| MSN | Descent Mission File |
| MSP | Microsoft Paint bitmap |
| MSP | Windows Installer patch file |
| MST | Windows Installer transform |
| MTM | MultiTracker music module (MOD) file |
| MUL | Online game called Ultima online |
| MUS | Music |
| MUS10 | Mus10 audio |
| MVB | Microsoft Multimedia Viewer file |
| MWP | Lotus Wordpro 97 Smartmaster file |
| NAN | Nanoscope files (Raw Grayscale) |
| NAP | NAP Metafile |
| netCDF | network Common Data Form |
| NCB | Microsoft Developer Studio file |
| NCD | Norton Change Directory |
| NCF | Netware Command File |
| NCF | Lotus Notes internal clipboard |
| NDO | 3D low-polygon modeler, Nendo |
| NFF | Neutral File Format |
| NFT | NetObject Fusion template file |
| NIL | Norton Icon Library file (EasyIcons-compatible) |
| NIST | NIST Sphere audio |
| NLB | Oracle 7 data |
| NLM | Netware Loadable Module |
| NLS | National Language Support file used for localization (for example, by Uniscape) |
| NLU | Norton Live Update E-Mail Trigger file |
| NOD | NetObject Fusion file |
| NSF | Lotus Notes database |
| NSO | NetObject Fusion document file |
| NST | Noise Tracker music module (MOD) file |
| NS2 | Lotus Notes database (version 2) |
| NTF | Lotus Notes database template |
| NTX | CA-Clipper index file |
| NWC | Noteworthy Composer song file |
| NWS | Microsoft OutlookExpress news message (MIME RFC822) |
| O01 | Typhoon voice file |
| OBD | Microsoft Office binder template |
| OBD | Microsoft Office Binder |
| OBJ | Object file |
| OBZ | Microsoft Office Binder Wizard |
| OCX | Microsoft Object Linking and Embedding custom control |
| ODS | Microsoft Outlook Express mailbox file (?) |
| OFF | 3D mesh Object File Format |
| OFN | Microsoft Office FileNew file |
| OFT | Microsoft Outlook template |
| OKT | Oktalyzer music module (MOD) file |
| OLB | OLE Object Library |
| OLE | OLE object |
| OOGL | Object Oriented Graphics Library |
| OPL | Organiser Programming Language source file - Psion/Symbian |
| OPO | OPL output executable file |
| OPT | Microsoft Developer Studio file |
| P3 | Primavera Project Planner file | |
| P10 | Tektronix Plot 10 drawing | |
| P65 | Pagemaker 6.5 file | |
| P7C | Digital ID file (MIME) | |
| PAB | Microsoft Personal Address Book | |
| PAC | SB Studio II package | |
| PAK | Quake WAD file | |
| PAL | A compressed file | |
| PAS | Pascal source code (Borland) | |
| PAT | DataCAD Hatch pattern file | |
| PAT | Corel Draw pattern | |
| PAT | Advanced Gravis Ultrasound/Forte tech. Patch | |
| PBD | PowerBuilder Dynamic library, an alternative to a native DLL | |
| PBF | Turtle Beach Pinnacle Bank File | |
| PBK | Microsoft Phonebook | |
| PBL | PowerBuilder Library used in the PowerBuilder development environment | |
| PBM | Portable bitmap | |
| PBR | PowerBuilder Resource | |
| PCD | Kodak Photo-CD image | |
| PCD | P-Code compiled test scripts as in Microsoft Tst and Microsoft Visual Test | |
| PCE | Maps Eudora mailbox names to DOS filenames | |
| PCL | Hewlett-Packard Printer Control Language file (printer-ready bitmap) | |
| PCM | Audio file format | |
| PCM | OKI MSM6376 synth chip PCM format | |
| PCP | Symantec Live Update Pro file | |
| PCS | PICS animation | |
| PCT | Macintosh PICT drawing | |
| PCX | ZSoft PC Paintbrush bitmap | |
| PDB | 3Com Palmpilot database file | |
| PDD | Graphic image that can be opened with Paint Shop Pro and possibly other image software | |
| Adobe Acrobat Portable Document Format file (displayable with a Web browser) | ||
| Microsoft Systems Management Server Package Definition File | ||
| Netware Printer Definition File | ||
| PDP | Broderbund's Print Shop Deluxe file | |
| PDQ | Patton&Patton Flowcharting PDQ Lite file | |
| PDS | Photographic image file (origin not yet identified) | |
| PF | Aladdin Systems Private Files encrypted file | |
| PFA | Type 1 font (ASCII) | |
| PFB | Type 1 font (binary) | |
| PFC | PF Component | |
| PFM | Printer Font Metrics | |
| PGL | HP Plotter drawing | |
| PGM | Portable Graymap (bitmap) | |
| PGP | PGP encrypted file | |
| PH | Temporary file generated by Microsoft Help Compiler | |
| PHP | HTML page that includes a PHP script | |
| PHP3 | HTML page that includes a PHP script | |
| PHTML | HTML page that includes a PHP script | |
| PHTML | Perl-parsed HTML | |
| PIC | PC Paint bitmap | |
| PIC | Lotus picture | |
| PIC | Macintosh PICT drawing | |
| PICT | Mac PICT image file | |
| PIF | Program Information File | |
| PIF | IBM PIF drawing | |
| PIG | Lucas Arts Dark Forces WAD file | |
| PIN | Epic Pinball data file | |
| PIN | Epic Pinball data file | |
| PIX | Inset Systems bitmap | |
| PJ | MKS Source Integrity file | |
| PJX | Microsoft's Visual Foxpro Project | |
| PJT | Microsoft's Visual Foxpro Project | |
| PKG | Microsoft Developer Studio application extension (similar to a DLL file) | |
| PKR | PGP Public Keyring | |
| PL | Perl program | |
| PLG | A file format use by REND386/AVRIL | |
| PLI | Oracle 7 data description | |
| PLM | DisorderTracker2 module | |
| PLS | DisorderTracker2 sample | |
| PLS | MPEG PLayList file (used by WinAmp) | |
| PLT | HPGL Plotter drawing | |
| PLT | AutoCAD Plot drawing | |
| PLT | Gerber sign-making software | |
| PM5 | Pagemaker 5.0 file | |
| PM6 | Pagemaker 6.0 file | |
| PNG | Portable Network Graphics bitmap | |
| PNG | Paint Shop Pro Browser catalogue | |
| PNT | MacPaint graphic file | |
| PNTG | Same as PNT file | |
| POG | Descent2 PIG file extension | |
| POL | Windows NT Policy file | |
| POP | Visual dBASE popup file | |
| POT | Microsoft PowerPoint Template | |
| POV | Persistence of Vision ray-tracer | |
| PP4 | Picture Publisher 4 bitmap | |
| PPA | Microsoft PowerPoint Add-in | |
| PPF | Turtle Beach Pinnacle Program File | |
| PPM | Portable Pixelmap bitmap | |
| PPP | Parson Power Publisher | |
| PPP | Serif PagePlus desktop publishing default output | |
| PPS | Microsoft PowerPoint slide show | |
| PPT | Microsoft PowerPoint presentation | |
| PRC | 3Com Palmpilot resource (text or program) file | |
| PRE | Lotus Freelance presentation | |
| PRF | Windows system file | |
| PRF | Macromedia Director settings file | |
| PRG | dBase, Clipper, and FoxPro program source files | |
| PRG | WAVmaker program | |
| PRJ | 3d Studio (DOS) project file | |
| PRN | Print Table (space delimited text) | |
| PRN | DataCAD Windows Printer file | |
| PRP | Oberon's Prospero data conversion product saved project file | |
| PRS | Harvard Graphics for Windows presentation | |
| PRT | A print-formatted file | |
| PRT | Pro/ENGINEER part file | |
| PRV | A PsiMail Internet provider template file | |
| PRZ | Lotus Freelance Graphics 97 file | |
| PS | Postscript-formatted file (a Postscript printer-ready file) | |
| PSB | Pinnacle Sound Bank | |
| PSD | Adobe Photoshop bitmap | |
| PSI | PSION a-law audio | |
| PSM | Protracker Studio Module format | |
| PSM | Sound data for Epic's games | |
| PSP | Paintshop Pro image file | |
| PST | Microsoft Outlook Personal Folder File | |
| PTD | Pro/ENGINEER table file | |
| PTM | Polytracker music module (MOD) file | |
| PUB | Ventura Publisher publication | |
| PUB | Microsoft Publisher document | |
| PWD | Microsoft Pocket Word document | |
| PWL | Windows 95 password list file | |
| PWP | Photoworks image file (a roll of file that can be viewed using Photoworks) | |
| PWZ | Microsoft PowerPoint Wizard | |
| PXL | Microsoft Pocket Excel spreadsheet | |
| PY | Save emessages from Yahoo | |
| PY | Python script file | |
| PYC | Python script file |
| QAD | PF QuickArt Document |
| QBW | QuickBooks for Windows file |
| QDT | Quick Books data file from the Quicken UK Accountancy/Tax/Invoice program |
| QD3D | Apple's QuickDraw 3D Metafile format |
| QFL | FAMILY LAWYER document |
| QIC | Microsoft Backup file |
| QIF | QuickTime-related image (MIME) |
| QIF | Quicken Import File |
| QLB | Quick Library |
| QM | Quality Motion file |
| QRY | Microsoft Query |
| QST | Quake Spy Tab file |
| QT | QuickTime Movie |
| QTI | QuickTime-related image |
| QTIF | QuickTime-related image |
| QTM | QuickTime Movie |
| QTP | QuickTime Preferences file |
| QTS | Mac PICT image file |
| QTS | QuickTime-related image |
| QTX | QuickTime-related image |
| QW | Symantec Q&A Write program file |
| QXD | Quark XPress file |
| R | Pegasus Mail resource file |
| RA | Real Audio sound |
| RAM | RealAudio metafile |
| RAR | RAR compressed archive (Eugene Roshall's format) |
| RAS | Sun Raster Images bitmap |
| RAW | Raw File Format (bitmap) |
| RAW | Raw signed PCM data |
| RAW | Raw signed PCM data |
| RBH | Maintained by RoboHELP, the RBH file adds to the information contained in the Help project file |
| RDF | Resource Description Framework file (related to XML and metadata) |
| RDL | Descent Registered Level |
| REC | Recorder macro |
| REC | RapidComm voice file |
| REG | Registration file |
| REP | Visual dBASE report file |
| RES | Microsoft Visual C++ Resource |
| RGB, SGI |
Silicon Graphics RGB files |
| S | Assembler source code | |
| S3I | Scream Tracker v3 instrument | |
| S3M | Sound module file for ScreamTracker v3 | |
| SAM | Ami Professional document | |
| SAM | Signed 8bit sample data | |
| SAV | Saved game file | |
| SB | Raw Signed Byte (8bit) data | |
| SBK | Creative Labs Soundfont 1.0 Bank file (Soundblaster)/EMU SoundFont v1.x Bank files | |
| SBL | Shockwave Flash object | |
| SC2 | Microsoft Schedule+ 7 file format | |
| SC2 | SAS catalog (Windows 95/NT, OS/2, Mac) | |
| SC3 | SimCity 3000 saved game file | |
| SCC | Microsoft Source Safe file | |
| SCD | Matrix/Imapro SCODL slide image | |
| SCD | Microsoft Schedule+ 7 | |
| SCF | Windows Explorer command file | |
| SCH | Microsoft Schedule+ 1 | |
| SCI | ScanVec Inspire Native file format | |
| SCN | trueSpace2 scene | |
| SCP | Dial-Up Networking Script | |
| SCR | Windows screensaver | |
| SCR | Fax image | |
| SCT | SAS catalog (Dos) | |
| SCT | Scitex CT bitmap | |
| SCT | Microsoft FoxPro forms | |
| SCT01 | SAS catalog (Unix) | |
| SCV | ScanVec CASmate Native file format | |
| SCX | Microsoft FoxPro forms | |
| SD | Sound Designer I audio | |
| SD2 | Sound Designer 2 flattened file/data fork | |
| SD2 | SAS database (Windows 95/NT OS/2, Mac) | |
| SDF | System Data File Format - legacy Unisys (Sperry) format | |
| SDK | Roland S-series floppy disk image | |
| SDL | SmartDraw library | |
| SDR | SmartDraw drawing | |
| SDS | Raw Midi Sample Dump Standard file | |
| SDT | SmartDraw template | |
| SDV | Semicolon Divided Values file | |
| SDW | Lotus WordPro graphic file | |
| SDW | Raw Signed DWord (32bit) data | |
| SDX | Midi Sample Dump Standard files compacted by SDX | |
| SEA | Self-expanding archive (used by Stuffit for Mac files and possibly by others) | |
| SEP | Tagged Image File Format (TIFF) bitmap | |
| SES | Cood Edit Session file (common digital audio editor file ) | |
| SF | IRCAM SoundFile format | |
| SF2 | Emu SoundFont v2.0 file | |
| SFD | SoundStage Sound File Data | |
| SFI | SoundStage Sound File Info | |
| SFR | Sonic Foundry Sample Resource | |
| SFW | Seattle Film Works (Mangled JPEG) | |
| SFX | RAR self-extracting archive | |
| SF2 | Creative Labs Soundfont 2.0 Bank file (Soundblaster) | |
| SGML | Standard Generalized Markup Language | |
| SHB | Corel Show presentation | |
| SHB | Document shortcut file | |
| SHG | Hotspot bitmap | |
| SHP | 3D Studio (DOS) shapes file | |
| SHP | File format used by some programs for 3D modeling of multipart interactive triangle models | |
| SHS | Shell scrap file; reportedly used to send "password stealers" | |
| SHW | Corel Show presentation | |
| SIG | Signature file | |
| SHTML | HTML file containing Server Side Includes (SSI) | |
| SIT | Stuffit archive of Mac files | |
| SIZ | Oracle 7 configuration | |
| SKA | PGP secret Keyring | |
| SKL | Macromedia Director resource file | |
| SL | PACT's Save Layout extension | |
| SLB | AutoDesk Slide Library File Format | |
| SLD | AutoDesk Slide File Format | |
| SLK | Symbolic Link (SYLK) spreadsheet | |
| SM3 | DataCAD Symbol file | |
| SMP | Samplevision format | |
| SMP | Ad Lib Gold Sample | |
| SND | NeXT sound | |
| SND | Mac Sound Resource | |
| SND | Raw unsigned PCM data | |
| SND | AKAI MPC-series sample | |
| SNDR | Sounder sound file | |
| SNDT | Sndtool sound file | |
| SNM | Netscape mailbox (mail folder) index | |
| SOU | SB Studio II sound | |
| SPD | Speach Data file | |
| SPL | Shockwave Flash Object | |
| SPL | Digitracker Sample | |
| SPPACK | SPPack sound sample | |
| SPRITE | Acorn's bitmap format | |
| SQC | Structured Query Language (SQR) common code file | |
| SQL | Informix SQL queries | |
| SQL | Generally used by database products as an extension for SQL queries (scripts, text, or binary) | |
| SQR | Structured Query Language (SQR) program file | |
| SSD01 | SAS data sets (Unix) | |
| SSD | SAS database (Dos) | |
| SSF | Enable spreadsheet file | |
| STL | Stereolithography file | |
| STM | Shorter suffix for .shtml, an HTML file containing a server side include SSI | |
| STM | Scream Tracker v2 music module (MOD) file | |
| ST | Atari ST disk image | |
| STR | Screensaver file | |
| STY | Ventura Publisher style sheet | |
| SVX | Amiga 8SVX sound | |
| SVX | Interchange file format, 8SVX/16SV | |
| SW | Raw signed Word (16bit) data | |
| SWA | Shockwave audio file in Macromedia Director (an MP3 file) | |
| SWF | Shockwave Flash object | |
| SWP | DataCAD Swap file | |
| SYS | System file | |
| SYW | Yamaha SY-series wave files |
| T64 | Commodore 64 emulator tape image file |
| TAB | Guitar Tablature file |
| TAR | Tape Archive |
| TAZ | Unix Gzip/Tape Archive |
| TBK | Asymetrix Toolbook interactive multimedia files |
| TCL | Script in the TCL/TK Language |
| TDB | Thumbs Plus database |
| TDDD | A file format use by the Imagine & Turbo Silver ray-tracers |
| TEX | Texture file |
| TGA | Targa bitmap |
| TGZ | Unix Gzip/Tape Archive |
| THEME | Windows 95 Desktop Theme |
| THN | Graphics Workshop for Windows thumbnail |
| TIF | Tag Image File Format (TIFF) bitmap |
| TIFF | Tag Image File Format (TIFF) bitmap |
| TIG | Tiger file, used by US government to distribute maps |
| TLB | OLE Type Library |
| TLE | Two-Line Element set (NASA) |
| TMP | Windows temporary file |
| TOC | Table of contents of Eudora mailboxes |
| TOL | Kodak photoenhancer |
| TOS | The Operation System for Atari line of 16/32 and 32/32 computers |
| TPL | CakeWalk Audio Template file |
| TPL | DataCAD Template file |
| TPP | Teleport Pro Project |
| TRK | Kermit scrpit file |
| TRM | Terminal file |
| TRN | MKS Source Integrity project usage log |
| TTF | TrueType font |
| TTK | Corel Catalyst Translation Tool Kit |
| TWF | TabWorks file |
| TWW | Tagwrite Template |
| TX8 | MS-DOS text |
| TXB | Descent/D2 Encoded Briefing File |
| TXT | ASCII text-formatted audio data |
| TXW | Yamaha TX16W wave files |
| TZ | Old compression format file |
| T2T | Sonata CAD modelling software file |
| UB | Raw unsigned byte (8-bit) data |
| UDF | Windows NT Uniqueness Database File |
| UDW | Raw unsigned doubleword (32-bit) data |
| ULAW | US telephony format (CCITT G.711) audio |
| ULT | Ultratracker music module (MOD) file |
| UNI | MikMod UniMod formatted file |
| URL | Internet shortcut file |
| USE | MKS Source Integrity file |
| UU | UU-encoded file |
| UUE | UU-encoded file |
| UW | Raw unsigned word (16-bit) data |
| UWF | UltraTracker Wave file |
| V8 | Covox 8-bit audio file |
| VAP | Annotated speech |
| VBA | VBase file |
| VBP | Visual Basic Project |
| VBW | Microsoft Visual Basic workspace |
| VBX | Visual Basic custom control |
| VCE | Natural MicroSystems (NMS) unformatted voice file (used by Cool Edit) |
| VCF | Virtual card file (Netscape) |
| VCF | Vevi configuration file; defines objects for use with Sense8's WorldToolKit |
| VCT | Microsoft FoxPro class library |
| VCX | Microsoft FoxPro class library |
| VDA | Targa bitmap |
| VI | Virtual Instrument file from National Instruments LABView product |
| VIFF | Khoros Visualisation format |
| VIR | File identified as a virus-infected file by Norton AntiVirus and possibly others |
| VIV | VivoActive Player streaming video file |
| VIZ | Division's dVS/dVISE file |
| VLB | Corel Ventura Library |
| VMF | FaxWorks audio file |
| VOC | Creative Labs Sound Blaster audio file |
| VOX | Dialogic audio file coded using ADPCM |
| VOX | Natural MicroSystems (NMS) formatted voice file |
| VOX | Talking Technology audio file |
| VP | Ventura Publisher publication |
| VQE | Yamaha Sound-VQ Locator file |
| VQF | Yamaha Sound-VQ file (possible emerging standard) |
| VQL | Yamah Sound-VQ Locator file |
| VRF | Oracle 7 configuration |
| VRML | A VRML file |
| VSD | Visio drawing (flow chart or schematic) |
| VSL | Download List file (GetRight) |
| 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 |
| VSS | Visio Stencil file |
| VST | Targa bitmap |
| VSW | Visio Workspace file |
| VXD | Microsoft Windows virtual device driver |
| W3L | W3Launch file |
| WAB | Microsoft Outlook file |
| WAD | Large file for Doom game containing video, player level, and other information |
| WAL | Quake 2 texture file |
| WAV | Windows Waveform sound |
| WB1 | QuattroPro for Windows spreadsheet |
| WB2 | QuattroPro for Windows spreadsheet |
| WBK | Microsoft Word Backup |
| WBL | Argo WebLoad II upload file |
| WBR | Crick Software WordBar File |
| WBT | Crick Software Wordbar Template |
| WCM | WordPerfect Macro |
| WDB | Microsoft Works database |
| WDG | Warftpd remote daemon file |
| WEB | CorelXara Web document |
| WFB | Turtle Beach WaveFront Bank (Maui/Rio/Monterey) |
| WFD | Turtle Beach WaveFront Drum set (Maui/Rio/Monterey) |
| WFM | Visual dBASE Windows form |
| WFN | symbols for use in Corel Draw |
| WFP | Turtle Beach WaveFront Program (Maui/Rio/Monterey) |
| WGP | Wild Board Games data file |
| WID | Ventura width table |
| WIL | WinImage file |
| WIZ | Microsoft Word Wizard |
| WK1 | Lotus 123 versions 1 & 2 spreadsheet |
| WK3 | Lotus 123 version 3 spreadsheet |
| WK4 | Lotus 123 version 4 spreadsheet |
| WKS | Lotus 123 Worksheet spreadsheet |
| WKS | Microsoft Works document |
| WLD | REND386/AVRIL file |
| WLF | Argo WebLoad I upload file |
| WLL | Microsoft Word Add-In |
| WMF | Windows Metafile |
| WOW | Grave Composer music module (MOD) file |
| WP | WordPerfect document |
| WPW | Novel PerfectWorks document |
| WP4 | WordPerfect 4 document |
| WP5 | WordPerfect 5 document |
| WP6 | WordPerfect 6 document |
| WPD | WordPerfect Demo |
| WPF | Enable word processing document |
| WPD | WordPerfect Document |
| WPG | WordPerfect Graphic |
| WPS | Microsoft Works document |
| WPT | WordPerfect Template |
| WQ1 | QuattroPro/DOS spreadsheet |
| WQ2 | QuattroPro/DOS version 5 spreadsheet |
| WR1 | Lotus Symphony |
| WRG | ReGet document |
| WRI | Write document |
| WRK | Cakewalk music audio project file |
| WRL | Virtual Reality model |
| WRZ | Another VRML fileject |
| WS1 | WordStar for Windows 1 document |
| WS2 | WordStar for Windows 2 document |
| WS3 | WordStar for Windows 3 document |
| WS4 | WordStar for Windows 4 document |
| WS5 | WordStar for Windows 5 document |
| WS6 | WordStar for Windows 6 document |
| WS7 | WordStar for Windows 7 document |
| WSD | WordStar 2000 document |
| WVL | Wavelet Compressed Bitmap |
| WWL | Microsoft Word add-in file |
| X | AVS image format |
| XAR | Corel Xara drawing |
| XBM | A MIME 'xbitmap' image |
| XI | Instrument sample file for ScreamTracker |
| XIF | Wang imaging file (comes with Windows 95) |
| XLA | Microsoft Excel add-in |
| XLB | Microsoft Excel toolbar |
| XLC | Microsoft Excel chart |
| XLD | Microsoft Excel dialogue |
| XLK | Microsoft Excel backup |
| XLL | Microsoft Excel add-in file |
| XLM | Microsoft Excel macro |
| XLS | Microsoft Excel worksheet |
| XLT | Microsoft Excel template |
| XLV | Microsoft Excel VBA module |
| XLW | Microsoft Excel workbook / workspace |
| XM | FastTracker 2, Digital Tracker music module (MOD) file |
| XNK | Microsoft Exchange shortcut file |
| XPM | X BitMap format |
| XR1 | Epic MegaGames Xargon data file |
| XTP | XTree data file |
| XWD | X Window Dump format |
| XWF | Yamaha XG Works file (MIDI sequencing) |
| XY3 | XYWrite III document |
| XY4 | XYWrite IV document |
| XYP | XYWrite III Plus document |
| XYW | XYWrite for Windows 4.0 document |
| X16 | Macromedia Extra (program extension), 16 bit |
| X32 | Macromedia Extra (program extension), 32 bit |
| Z | Unix Gzip |
| ZAP | Windows software installation settings file |
| ZIP | Zip file |
| ZOO | An early compressed file format |
| 12M | Lotus 123 97 Smartmaster file |
| 123 | Lotus 123 97 file |
| 2D | VersaCAD two-dimensional drawing file |
| 2GR / 3GR | VGA Graphics driver/configuration files under Windows |
| 3D | VersaCAD three-dimensional drawing file |
| 3DM | 3D NURBS modeler, Rhino |
| 3DS | A file in 3D Studio (for DOS) format |
| 386 | A file for use in an 80386 or higher microprocessor |
| 4GE | Informix 4GL compiled code |
| 4GL | Informix 4GL source code |
| 669 | Composer 669, Unis Composer music mod file |
| 669 | 669 tracker module |
| #01> | A method of numbering picture files for a roll of film that has been scanned for computer presentation |
| $$$ | Used by OS/2 to keep track of archived files |
| @@@ | Screen files used in the installation and instruction on use of such applications as Microsoft Codeview for C |