Data Formats and Their Suggested File Extensions
Microsoft DOS and Windows three letter file formats
(except they are not always three letters)
~ # $ 0 1 3 4 6 8 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z| .~$~ | Temporary file (1st Reader) | |
| .~ap | Old AppExpert project database (Borland C++ 4.5) | |
| .~de | Project backup (Borland C++ 4.5) | |
| .~mn | Menu backup (Norton Commander) | |
| .~mp | Temporary File (Various) | |
| .#24 | Printer data file for 24 pin matrix printer (LocoScript) | |
| .#ib | Printer data file (LocoScript) | |
| .#sc | Printer data file (LocoScript) | |
| .#st | Standard mode printer definitions (LocoScript) | |
| .$$$ | Temporary file | |
| .$00 | Pipe file (DOS) | |
| .$db | Temporary file (dBASE IV) | |
| .$ed | Editor temporary file (MS C) | |
| .$o1 | Pipe file (DOS) | |
| .$vm | Virtual manager temporary file (Windows 3.x) | |
| .000 | Compressed harddisk data (DoubleSpace) | |
| .001 | Fax (many) | |
| .075 | 75x75 dpi display font (Ventura Publisher) | |
| .085 | 85x85 dpi display font (Ventura Publisher) | |
| .091 | 91x91 dpi display font (Ventura Publisher) | |
| .096 | 96x96 dpi display font (Ventura Publisher) | |
| .0b | Printer font with lineDraw extended character set (PageMaker) | |
| .1 | Roff/nroff/troff/groff source for manual page (cawf2.zip) | |
| .15u | Printer font with PI font set (PageMaker) | |
| .1st | Usually README.1ST text | |
| .301 | Fax (Super FAX 2000 - Fax-Mail 96)) | |
| .323 | H.323 Internet Telephony configuration | |
| .386 | Intel 80386 processor driver (Windows 3.x) | |
| .3ds | Graphics (3D Studio) | |
| .3fx | Effect (CorelChart) | |
| .3gr | Data file (Windows Video Grabber) | |
| .3t4 | Binary file converter to ASCII (Util3) | |
| .4c$ | Datafile (4Cast/2) | |
| .4sw | 4dos Swap File | |
| .4th | Forth source code file (ForthCMP - LMI Forth) | |
| .669 | Music (8 channels) (The 669 Composer) | |
| .6cm | Music (6 Channel Module) (Triton FastTracker) | |
| .8 | A86 assembler source code file | |
| .8cm | Music (8 Channel Module) (Triton FastTracker) | |
| .8m | Printer font with Math 8 extended character set (PageMaker) | |
| .8u | Printer font with Roman 8 extended character set (PageMaker) | |
| .a | Ada source code file | |
| .a | Library (unix) | |
| .a11 | Graphics AIIM image file | |
| .ab6 | Datafile (ABStat) | |
| .ab8 | Datafile (ABStat) | |
| .abk | Automatic backup file (CorelDRAW) | |
| .abs | Abstracts (info file) | |
| .abs | Data file (Abscissa) | |
| .ac3 | Creative PlayCenter media | |
| .aca | Project (Project Manager Workbench) | |
| .aca | Microsoft Agent files | |
| .acb | Graphics (ACMB) | |
| .acc | Program (DR-DOS - ViewMax) (GEM / resident) | |
| .acf | Microsoft Agent files | |
| .acg | Microsoft Agent files | |
| .acl | AutoCorrect List (Microsoft Office) | |
| .act | Actor source code file | |
| .act | Foxdoc Action Diagrams (FoxPro) | |
| .act | Presentation (Action!) | |
| .ad | Screen saver data (AfterDark) | |
| .ada | Ada source code file | |
| .adb | Ada Package Body | |
| .adc | Bitmap graphics (16 colors) (Scanstudio) | |
| .adi | Graphics (AutoCAD) | |
| .adl | Mca adapter description library (QEMM) | |
| .adn | Add-in (Lotus 1-2-3) | |
| .ads | Ada Package Specification | |
| .adt | Datafile for cardfile application (HP NewWave) | |
| .adt | Fax (AdTech) | |
| .adx | Document (Archetype Designer) | |
| .af2 | Flowchart (ABC FlowCharter 2.0) | |
| .afi | Truevision bitmap graphics | |
| .afl | Font file (for Allways) (Lotus 1-2-3) | |
| .afm | Type 1 font metric ASCII data for font installer (ATM - many) | |
| .afm | Datafile for cardfile application (HP NewWave) | |
| .ai | Vector graphics (Adobe Illustrator) | |
| .ain | Compressed file archive created by AIN | |
| .aio | APL file transfer format file | |
| .ais | Array of Intensity Samples graphics (Xerox) | |
| .aix | Datafile for cardfile application (HP NewWave) | |
| .all | Format file for working pages (Always) | |
| .all | General printer information (WordPerfect for Win) | |
| .all | Symbol and font files (Arts & Letters) | |
| .alt | Menu file (WordPerfect Library) | |
| .amf | Music (Advanced Module Format) | |
| .amg | Compressed file archive created by AMGC | |
| .amg | System image file (Actor) | |
| .ani | Animation (Presidio - many) | |
| .anm | Animation (Deluxe Paint Animator) | |
| .ann | Help Annotations (Windows 3.x) | |
| .ans | Ansi graphics (character animation) | |
| .ans | Ascii text ANSI character set (NewWave Write) | |
| .aos | Add-On Software (Nokia 9000) | |
| .ap | Compressed Amiga file archive created by WHAP | |
| .ap | Datafile (Datalex EntryPoint 90) | |
| .apc | Printer driver (Lotus 1-2-3) | |
| .apd | Printer driver (Lotus 1-2-3) | |
| .apf | Printer driver (Lotus 1-2-3) | |
| .api | Passed parameter file (1st Reader) | |
| .api | Printer driver (Lotus 1-2-3) | |
| .apl | APL work space format file | |
| .app | Add-in application file (Symphony) | |
| .app | Application object file (dBASE Application Generator) | |
| .app | Executable application file (DR-DOS - NeXTstep - Atari) | |
| .app | Generated application (FoxPro) | |
| .apr | Employee performance review (Employee Appraiser) | |
| .apx | Appexpert database file (Borland C++ 4.5) | |
| .arc | Compressed file archive created by ARC (arc602.exe/pk361.exe) | |
| .arc | Compressed file archive created by SQUASH (squash.arc) | |
| .arf | Automatic Response File | |
| .ari | Compressed file archive created by ARI | |
| .arj | Compressed file archive created by ARJ (arj241.exe) | |
| .ark | Arc file archive created by CP/M port of ARC file archiver | |
| .ark | Compressed file archive created by QUARK | |
| .arr | Arrangement (Atari Cubase) | |
| .art | Graphics (scrapbook) (Art Import) | |
| .art | Raster graphics (First Publisher) | |
| .arx | Compressed file archive created by ARX | |
| .asc | Ascii text file | |
| .asc | Transport armor file (PGP) | |
| .asd | Autosave file (Word for Windows) | |
| .asd | Presentation (Astound) | |
| .asd | Screen driver (Lotus 1-2-3) | |
| .asf | Datafile (STATGRAPHICS) | |
| .asf | Screen font (Lotus 1-2-3) | |
| .ash | Assembly language header file (TASM 3.0) | |
| .asi | Assembler include file (Turbo C - Borland C++) | |
| .asm | Assembly source code file | |
| .aso | Assembler object (object orientated) file (Turbo Assembler) | |
| .asp | Aspect source code file (Procomm Plus) | |
| .asp | Association of Shareware Professionals OMBUDSMN.ASP notice | |
| .asp | Active Server Page (Internet Information Server) | |
| .aspx | ASP.NET page (.NET Framework) | |
| .at2 | Auto template (Aldus Persuasion 2.0) | |
| .atm | Adobe Type Manager data/info | |
| .au | Sound (audio) file (SUN Microsystems) | |
| .aux | Auxillary references (TeX/LaTeX) | |
| .aux | Auxiliary dictionary (ChiWriter) | |
| .ava | Publication (Avagio) | |
| .avi | Audio Video Interleaved animation file (Video for Windows) | |
| .aw | Text file (HP AdvanceWrite) | |
| .awk | Awk script/program | |
| .awm | Movie (Animation Works) | |
| .awp | Fax Key Viewer (Windows) | |
| .aws | Fax Signature Viewer (Windows) | |
| .aws | Data (STATGRAPHICS) | |
| .b | Batch list (APPLAUSE) | |
| .b&w | Black and white graphics (atari - mac) | |
| .b&w | Mono binary screen image (1st Reader) | |
| .b1n | Both mono and color binary screen image (1st Reader) | |
| .b30 | Printer font (JLaser - Cordata) (Ventura Publisher) | |
| .b64 | Base 64 encoded | |
| .b8 | Raw graphics (one byte per pixel) plane two (PicLab) | |
| .b_w | Black and white graphics (atari - mac) | |
| .bad | Bad file (Oracle) | |
| .bak | Backup file | |
| .bal | Music score (Ballade) | |
| .bar | Horizontal bar menu object file (dBASE Application Generator) | |
| .bas | Basic source code file | |
| .bat | Batch file (DOS) | |
| .bb | Database backup (Papyrus) | |
| .bbl | Bibliographic reference (TeX/BibTeX) | |
| .bbm | Brush (Deluxe Paint) | |
| .bbs | Bulletin Board System announce or text info file | |
| .bch | Batch process object file (dBASE Application Generator) | |
| .bch | Datafile (Datalex EntryPoint 90) | |
| .bco | Outline font description (Bitstream) | |
| .bcp | Borland C++ makefile | |
| .bcw | Environment settings (Borland C++ 4.5) | |
| .bdf | Bitmap Distribution Format font file (X11) | |
| .bdf | Datafile (Egret) | |
| .bdr | Border (MS Publisher) | |
| .bez | Outline font description (Bitstream) | |
| .bf2 | Bradford 2 font | |
| .bfm | Font metrics (unix/Frame) | |
| .bfx | Fax (BitFax) | |
| .bga | Bitmap graphics | |
| .bgi | Borland Graphics Interface device driver | |
| .bib | Bibliography (ASCII) | |
| .bib | Database - not compatible with TeX format (Papyrus) | |
| .bib | Literature database (TeX/BibTeX) | |
| .bif | Binary Image Format b&w graphics (Image Capture board) | |
| .bin | Binary file | |
| .bio | OS/2 BIOS | |
| .bit | Bitmap X11 | |
| .bk | Faxbook (JetFax) | |
| .bk! | Document backup (WordPerfect for Win) | |
| .bk1 | Timed backup file for document window 1 (WordPerfect for Win) | |
| .bk2 | Timed backup file for document window 2 (WordPerfect for Win) | |
| .bk3 | Timed backup file for document window 3 (WordPerfect for Win) | |
| .bk4 | Timed backup file for document window 4 (WordPerfect for Win) | |
| .bk5 | Timed backup file for document window 5 (WordPerfect for Win) | |
| .bk6 | Timed backup file for document window 6 (WordPerfect for Win) | |
| .bk7 | Timed backup file for document window 7 (WordPerfect for Win) | |
| .bk8 | Timed backup file for document window 8 (WordPerfect for Win) | |
| .bk9 | Timed backup file for document window 9 (WordPerfect for Win) | |
| .bkp | Backup file (Write - TurboVidion DialogDesigner) | |
| .bkw | Mirror image of font set (FontEdit) | |
| .bld | Bloadable picture (BASIC) | |
| .blk | Temporary file (WordPerfect for Win) | |
| .bm | Bitmap graphics | |
| .bmk | Help Bookmarks (Windows 3.x) | |
| .bmp | Bitmap graphics (PC Paintbrush - many) | |
| .bnk | Adlib instrument bank file | |
| .boo | Compressed file ASCII archive created by BOO (msbooasm.arc) | |
| .bpc | Chart (Business Plan Toolkit) | |
| .bpt | Bitmap fills file (CorelDRAW) | |
| .br | Script (Bridge) | |
| .brd | Eagle Layout File | |
| .brk | Fax (Brooktrout Fax-Mail) | |
| .bsa | Compressed file archive created by BSARC | |
| .bsc | Compressed Apple II file archive created by BINSCII | |
| .bsc | Database (Source Browser) | |
| .bsc | Pwbrmake object file (MS Fortran) | |
| .btm | Batch To Memory batch file (4DOS) | |
| .btx | b+tree file | |
| .bug | Bugs and Problems | |
| .bup | Backup file | |
| .but | Button definitions (Buttons!) | |
| .buy | Datafile format (movie) | |
| .bv1 | Overflow file below insert point in Doc 1 (WordPerfect for Win) | |
| .bv2 | Overflow file below insert point in Doc 2 (WordPerfect for Win) | |
| .bv3 | Overflow file below insert point in Doc 3 (WordPerfect for Win) | |
| .bv4 | Overflow file below insert point in Doc 4 (WordPerfect for Win) | |
| .bv5 | Overflow file below insert point in Doc 5 (WordPerfect for Win) | |
| .bv6 | Overflow file below insert point in Doc 6 (WordPerfect for Win) | |
| .bv7 | Overflow file below insert point in Doc 7 (WordPerfect for Win) | |
| .bv8 | Overflow file below insert point in Doc 8 (WordPerfect for Win) | |
| .bv9 | Overflow file below insert point in Doc 9 (WordPerfect for Win) | |
| .bwb | Spreadsheet application (Visual Baler) | |
| .bwr | Beware (buglist) (Kermit) | |
| .c | C source code file | |
| .c | Compressed unix file archive created by COMPACT | |
| .c++ | C++ source code file | |
| .c-- | Source code (Sphinx C--) | |
| .c00 | Print file (Ventura Publisher) | |
| .c4 | Support file (Catfish File Manager) | |
| .c86 | C source code file (Computer Innovation C86) | |
| .ca | Initial cache data for root domain servers (Telnet) | |
| .cab | Microsoft compressed format | |
| .cac | dBASE IV executable when caching on/off (see cachedb.bat) | |
| .cad | Document (Drafix Windows CAD) | |
| .cal | Calendar file (Windows 3.x) | |
| .cal | Spreatsheet (SuperCalc) | |
| .can | Fax (Navigator Fax) | |
| .cap | Caption (Ventura Publisher) | |
| .cap | Session capture file (Telix) | |
| .cat | Catalog (dBASE IV) | |
| .cbc | Fuzzy logic system (CubiCalc) | |
| .cbl | Cobol source code file | |
| .cbm | Compiled bitmap graphics (XLib) | |
| .cbt | Computer Based Training (many) | |
| .cc | C++ source code file | |
| .ccc | Bitmap graphics (native format) (Curtain Call) | |
| .ccf | Communications configuration file (Symphony) | |
| .cch | Chart (CorelChart) | |
| .ccl | Communication Command Language file (Intalk) | |
| .cco | Btx Graphics file (XBTX) | |
| .cda | CD Audio Track (Windows) | |
| .cdb | Card database (CardScan) | |
| .cdb | Main database (TCU Turbo C Utilities) | |
| .cdf | Graphics (netcdf) | |
| .cdk | Document (Atari Calamus) | |
| .cdr | Vector graphics (CorelDRAW native format) | |
| .cdt | Data (CorelDraw 4.0) | |
| .cdx | Compound index (FoxPro) | |
| .ce | Main.ce (The FarSide Computer Calendar) | |
| .ceg | Bitmap graphics (Tempra Show - Edsun Continuous Edge Graphics) | |
| .cel | Graphics (Autodesk Animator - Lumena) | |
| .cf | Configuration file (imake) | |
| .cfg | Configuration | |
| .cfl | Chart (CorelFLOW) | |
| .cfn | Font data (Atari Calamus) | |
| .cfo | C Form Object internal format object file (TCU Turbo C Utilities) | |
| .cfp | Fax (The Complete Fax Portable) | |
| .cga | CGA display font (Ventura Publisher) | |
| .cgi | Common Gateway Interface script | |
| .cgm | Computer Graphics Metafile vector graphics (A&L - HG - many) | |
| .ch | Header file (Clipper 5) | |
| .ch3 | Chart (Harvard Graphics 3.0) | |
| .ch4 | Presentation (Charisma 4.0) | |
| .chd | Font descriptor (FontChameleon) | |
| .chi | Document (ChiWriter) | |
| .chk | Recovered data (ChkDsk) | |
| .chk | Temporary file (WordPerfect for Win) | |
| .chl | Configuration History Log | |
| .chn | Data (Ethnograph 3) | |
| .chp | Chapter file (Ventura Publisher) | |
| .chr | Character set (Turbo C - Turbo Pascal) | |
| .cht | Chart (Harvard Graphics 2.0 - SoftCraft Presenter) | |
| .cht | Interface file for ChartMaster (dBASE) | |
| .cif | Caltech Intermediate Format graphics | |
| .cif | Chapter information (Ventura Publisher) | |
| .cit | Intergraph scanned image | |
| .cix | Database index (TCU Turbo C Utilities) | |
| .ckb | Keyboard mapping (Borland C++ 4.5) | |
| .cl | Common LISP source code file | |
| .clp | Clip art graphics (Quattro Pro) | |
| .clp | Clipboard file (Windows 3.x) | |
| .clp | Compiler script file (clip list) (Clipper 5) | |
| .clr | Color binary screen image (1st Reader) | |
| .clr | Color definitions (Photostyler) | |
| .cls | C++ class definition file | |
| .cm | Data file (CraftMan) | |
| .cmd | Batch file (OS/2) | |
| .cmd | Command (dBASE - Waffle) | |
| .cmd | External command menu (1st Reader) | |
| .cmf | FM-music file (Creative Music File) | |
| .cmk | Card (Card Shop Plus) | |
| .cmm | Cmm script (batch) file (CEnvi) | |
| .cmp | Header file for PostScript printer files (CorelDRAW) | |
| .cmp | User dictionary (MS Word for DOS) | |
| .cmp | Bitmap graphics (Lead CMP compression) | |
| .cmv | Animation (CorelMove CorelDraw 4.0) | |
| .cnc | CNC general program data | |
| .cnf | Configuration (program - printer setup) | |
| .cnv | Data conversion support file (Word for Windows) | |
| .cnv | Temporary file (WordPerfect for Win) | |
| .cob | Cobol source code file | |
| .cod | Datafile (Forecast Plus - MS Multiplan - StatPac Gold) | |
| .cod | Program compiled code (FORTRAN) | |
| .cod | Template source file (dBASE Application Generator) | |
| .cod | Videotext file | |
| .col | Color palette (Autodesk Animator - many) | |
| .col | Spreadsheet (MS Multiplan) | |
| .com | Command (memory image of executable program) (DOS) | |
| .con | Configuration file (Simdir) | |
| .cpd | Script (Complaints Desk) | |
| .cpf | Fax (The Complete Fax) | |
| .cpi | Code Page Information file (DOS) | |
| .cpi | Colorlab Processed Image bitmap graphics | |
| .cpl | Control panel file (Windows 3.x) | |
| .cpl | Presentation (Compel) | |
| .cpp | C++ source code file | |
| .cpp | Presentation (CA-Cricket Presents) | |
| .cpr | Knowledge Access graphics | |
| .cps | Backup of startup files by Central Point PC Tools autoexec.cps | |
| .cps | coloured postscript files | |
| .cpt | Compressed Mac file archive created by COMPACT PRO (ext-pc.zip) | |
| .cpt | Encrypted memo file (dBASE) | |
| .cpt | Template (CA-Cricket Presents) | |
| .cpz | Music text file (COMPOZ) | |
| .crd | Cardfile (Windows Cardfile - YourWay) | |
| .crf | Cross-reference (MS MASM - Zortech C++) | |
| .crp | Encrypted database (dBASE IV) | |
| .crs | File Conversion Resource (WordPerfect 5.1) | |
| .crt | Terminal settings information (Oracle) | |
| .cru | Compressed file archive created by CRUSH | |
| .csg | Graph (Statistica/w) | |
| .csm | Precompiled headers (Borland C++ 4.5) | |
| .csp | Pc Emcee Screen Image file (Computer Support Corporation) | |
| .css | Datafile (CSS - Stats+) | |
| .css | Datasheet (Statistica/w) | |
| .csv | Comma Separated Values text file format (ASCII) | |
| .csv | Adjusted EGA/VGA palette (CompuShow) | |
| .ctc | Control file (PC Installer) | |
| .ctf | Character code translation file (Symphony) | |
| .ctl | Control file (dBASE IV - Aldus Setup) | |
| .ctx | Course TeXt file (Microsoft online guides) | |
| .ctx | Ciphertext file (Pretty Good Privacy RSA System) | |
| .cuf | C Utilities Form definition (TCU Turbo C Utilities) | |
| .cur | Cursor image file (Windows 3.x) | |
| .cut | Bitmap graphics (Dr. Halo) | |
| .cv4 | Color file (CodeView) | |
| .cvp | Cover page (WinFax) | |
| .cvs | Graphics (Canvas) | |
| .cvt | Backup file for CONVERTed database file (dBASE IV) | |
| .cvw | Color file (CodeView) | |
| .cxx | C++ source code file (Zortech C++) | |
| .cym | cybercash file | |
| .cyx | cybercash file | |
| .dat | Data file in special format or ASCII | |
| .db | Configuration (dBASE IV - dBFast) | |
| .db | Database (Paradox - Smartware) | |
| .db$ | Temperature debug info (Clarion Modula-2) | |
| .db$ | Temporary file (dBASE) | |
| .db2 | Database (dBASE II) | |
| .db3 | Database (dBASE III) | |
| .dba | Datafile (DataEase) | |
| .dbd | Business data (Business Insight) | |
| .dbd | Debug info (Clarion Modula-2) | |
| .dbf | Database file (dBASE III/IV - FoxPro - dBFast - DataBoss) | |
| .dbg | Symbolic debugging information (MS C/C++) | |
| .dbk | Database backup (dBASE IV) | |
| .dbm | Datafile (DataEase) | |
| .dbm | Menu template (DataBoss) | |
| .dbo | Compiled program (dBASE IV) | |
| .dbs | Database in SQL Windows format | |
| .dbs | Datafile (PRODAS) | |
| .dbs | Printer description file (Word - Works) | |
| .dbt | Data Base Text (Clipper) | |
| .dbt | Foxbase+ style memo (FoxPro) | |
| .dbt | Memo file for database w/same name (dBASE IV - dBFast) | |
| .dbw | Windows file (DataBoss) | |
| .dbx | DATABEAM graphics | |
| .dca | Document Content Architecture text file (IBM DisplayWrite) | |
| .dcf | Disk image file | |
| .dcp | Data CodePage (OS/2) | |
| .dcs | Bitmap graphics (CYMK format) (QuarkXPress) | |
| .dcs | Datafile (ACT! Activity Files) | |
| .dct | Database dictionary (Clarion Database Developer) | |
| .dct | Spell checking dictionary (Harvard Graphics 3.0 - Symphony) | |
| .dcx | Bitmap graphics (Multipage PCX) | |
| .dd | Compressed Macintosh file archive created by DISKDOUBLER | |
| .ddb | Bitmap graphics | |
| .ddi | Diskdupe Image file (ddupe322.zip) | |
| .ddp | Device Driver Profile file (OS/2) | |
| .deb | Debug script (DOS Debug) | |
| .def | Assembly header file (Geoworks) | |
| .def | Defaults - definitions | |
| .dem | Demonstration | |
| .dem | Graphics (VistaPro) | |
| .dev | Device driver | |
| .dfd | Data Flow Diagram graphic (Prosa) | |
| .dfi | Outline font description (Digifont) | |
| .dfl | Default program settings (Signature) | |
| .dfm | Data Flow Diagram model file (Prosa) | |
| .dfs | Delight Sound File | |
| .dfv | Printing form (Word) | |
| .dg | Autotrol graphics | |
| .dgn | Graphics (MicroStation) | |
| .dgs | Diagnostics | |
| .dh | Dependency information for .ph (Geoworks) | |
| .dhp | Dr. Halo PIC Format graphics (Dr. Halo II - III) | |
| .dht | Datafile (Gauss) | |
| .dia | Diagraph graphics (Computer Support Corporation) | |
| .dib | Bitmap graphics (Device-Independent Bitmap) | |
| .dic | Dictionary | |
| .dif | Database (VisiCalc) | |
| .dif | Output from Diff command - script for Patch command | |
| .dif | Text file (Data Interchange Format) | |
| .dip | Graphics | |
| .dir | Dialing directory file (Procomm Plus) | |
| .dir | Directory file (VAX) | |
| .dir | Movie (MacroMind Director 4.x) | |
| .dis | Distribution file (VAX Mail) | |
| .dis | Thesaurus (CorelDraw) | |
| .diz | Description file (Description In Zip) | |
| .dkb | Raytraced graphics (DKBTrace) | |
| .dl | Animation (Italian origin) | |
| .dld | Data (Lotus 1-2-3) | |
| .dlg | Dialog resource script file (MS Windows SDK) | |
| .dll | Dynamic Link Library (Windows 3.x - OS/2) | |
| .dll | Export/import filter (CorelDRAW) | |
| .dls | Setup (Norton Disklock) | |
| .dmo | Demo (Derive) | |
| .dmp | Dump file (eg. screen or memory) | |
| .dms | Compressed Amiga file archive created by DISKMASHER | |
| .doc | Document text file | |
| .doc | Word document (Microsoft) | |
| .dog | Screen file (Laughing Dog Screen Maker) | |
| .doh | Dependency information for .poh (Geoworks) | |
| .dos | External command file (1st Reader) | |
| .dos | Network driver (eg. pkt_dis.dos) | |
| .dos | Text file containing DOS specific info | |
| .dot | Line-type definition file (CorelDRAW) | |
| .dot | Template (Word for Windows) | |
| .dox | Text file (MultiMate 4.0) | |
| .doz | Description Out of Zip (VENDINFO) | |
| .dp | Calendar file (Daily Planner) | |
| .dp | Data file (DataPhile) | |
| .dpr | Default project- and state-related information (Borland C++) | |
| .drs | Display Resource (WordPerfect for Win) | |
| .drv | Device driver eg. for printer | |
| .drw | Vector graphics (Micrografx Designer) | |
| .ds4 | Vector graphics (Micrografx Designer 4.0) | |
| .dsc | Discard file (Oracle) | |
| .dsd | Database (DataShaper) | |
| .dsf | "Designer graphics version 6" | |
| .dsk | Project desktop file (Borland C++ - Turbo Pascal) | |
| .dsm | Digital sound module (DSI) | |
| .dsn | Design (Object System Designer) | |
| .dsp | Display parameters (Signature) | |
| .dsp | Graphics display driver (Dr.Halo) | |
| .dsr | Driver Resource (WordPerfect for Win) | |
| .dss | Screensaver file (DCC) | |
| .dss | Sound (Digital Soup) | |
| .dsw | Desktop settings (Borland C++ 4.5) | |
| .dt_ | Data fork of a Macintosh file (Mac-ette) | |
| .dta | Data file (Turbo Pascal - PC-File - Stata) | |
| .dtf | Database file (PFS - Q&A) | |
| .dtp | Document (Timeworks Publisher3) | |
| .dtp | Publication (Publish-It!) | |
| .dvc | Data (Lotus 1-2-3) | |
| .dvi | Device Independent document (TeX) | |
| .dvp | Desqview Program Information file (DESQview) | |
| .dvp | Device parameter file (AutoCAD) | |
| .dw2 | Drawing (DesignCAD for windows) | |
| .dwc | Compressed file archive created by DWC (dwc-a501.exe) | |
| .dwg | Drawing (Drafix) | |
| .dwg | Drawing database (AutoCAD) | |
| .dx | Text file (DEC WPS/DX format - DEC WPS Plus) | |
| .dxf | Drawing Interchange File Format vector graphics (AutoCAD) | |
| .dxn | Fax (Fujitsu dexNET) | |
| .dyn | Data (Lotus 1-2-3) | |
| .ebj | Error-checking object file (Geoworks) | |
| .ed5 | EDMICS graphics | |
| .edt | Default settings (VAX Edt editor) | |
| .eeb | Button bar for Equation Editor (WordPerfect for Win) | |
| .eft | High resolution screen font (ChiWriter) | |
| .efx | Fax (Everex EFax) | |
| .ega | EGA display font (Ventura Publisher) | |
| .el | Elisp source code file (Emacs lisp) | |
| .elc | Compiled ELISP code (Emacs lisp) | |
| .elt | Event list text file (Prosa) | |
| .emf | Enchanced Metafile graphics | |
| .emu | Terminal emulation data (BITCOM) | |
| .enc | Encoded file - UUENCODEd file (Lotus 1-2-3 - uuexe515.exe) | |
| .enc | Music (Encore) | |
| .end | Arrow-head definition file (CorelDRAW) | |
| .eng | Dictionary engine (Sprint) | |
| .eng | Graphics (charting) (EnerGraphics) | |
| .env | Enveloper macro (WOPR) | |
| .env | Environment file (WordPerfect for Win) | |
| .epd | Publication (Express Publisher) | |
| .epi | Document (Express Publisher) | |
| .eps | Encapsulated PostScript vector graphics (Adobe Illustrator) | |
| .eps | Printer font (Epson - Xerox...) (Ventura Publisher) | |
| .eqn | Equation (WordPerfect for Win) | |
| .erd | Entity Relationship Diagram graphic file (Prosa) | |
| .erm | Entity Relationship Diagram model file (Prosa) | |
| .err | Error log | |
| .err | Error messages for command line compilers | |
| .esh | Extended Shell batch file | |
| .esi | Esri plot file | |
| .eth | Document (Ethnograph 3) | |
| .etx | Structure Enhanced (setext) text | |
| .evt | Event log | |
| .evy | Document (WordPerfect Envoy) | |
| .ewd | Document (Express Publisher for Windows) | |
| .ex3 | Device driver (Harvard Graphics 3.0) | |
| .exc | Rexx source code file (VM/CMS) | |
| .exc | Exclude file for Optimize (do not process) (QEMM) | |
| .exe | Directly executable program (DOS) | |
| .exm | "Msdos executable system-manager compliant (HP calculator)" | |
| .ext | Extension file (Norton Commander) | |
| .exx | Intermediate file by MsgPut (IBM LinkWay) | |
| .ezf | Fax (Calculus EZ-Fax) | |
| .f | Fortran source code file | |
| .f | Compressed file archive created by FREEZE | |
| .f01 | Fax (perfectfax) | |
| .f06 | Dos screen text font - height 6 pixels (fntcol13.zip) | |
| .f07 | Dos screen text font - height 7 pixels (fntcol13.zip) | |
| .f08 | Dos screen text font - height 8 pixels (fntcol13.zip) | |
| .f09 | Dos screen text font - height 9 pixels (fntcol13.zip) | |
| .f10 | Dos screen text font - height 10 pixels (fntcol13.zip) | |
| .f11 | Dos screen text font - height 11 pixels (fntcol13.zip) | |
| .f12 | Dos screen text font - height 12 pixels (fntcol13.zip) | |
| .f13 | Dos screen text font - height 13 pixels (fntcol13.zip) | |
| .f14 | Dos screen text font - height 14 pixels (fntcol13.zip) | |
| .f16 | Dos screen text font - height 16 pixels (fntcol13.zip) | |
| .f2r | Linear module (music) (Farandole) | |
| .f3r | Blocked module (music) (Farandole) | |
| .f77 | Fortran 77 source code file | |
| .f96 | Fax (Frecom FAX96) | |
| .fac | Face graphics | |
| .faq | Frequently Asked Questions text file | |
| .far | Music | |
| .fax | Fax (raster graphics) (most Fax programs) | |
| .fc | Spell checking dictionary (Harvard Graphics 2.0) | |
| .fcm | Binary file patch file (forward compression)(jlpak10.zip) | |
| .fd | Declaration file (MS Fortran) | |
| .fd | Field offsets for compiler (DataFlex) | |
| .fdw | Form (F3 Design and Mapping) | |
| .feb | Button bar for Figure Editor (WordPerfect for Win) | |
| .ff | Outline font description (Agfa Compugraphics) | |
| .fff | Fax (defFax) | |
| .fft | Dca/FFT Final Form Text text file (DisplayWrite) | |
| .fh3 | Vector graphics (Aldus FreeHand 3.x) | |
| .fh4 | Vector graphics (Aldus FreeHand 4.x) | |
| .fi | Interface file (MS Fortran) | |
| .fif | Fractal Image Format file | |
| .fil | File template (Application Generator) | |
| .fil | Files list object file (dBASE Application Generator) | |
| .fil | Overlay (WordPerfect) | |
| .fin | Print-formatted text file (Perfect Writer - Scribble - MINCE) | |
| .fio | Support (ULead Viewer) | |
| .fit | Fits graphics | |
| .fit | File Index Table (WindowsNT) | |
| .fix | Patch file | |
| .fky | Macro file (FoxPro) | |
| .flb | Format library (Papyrus) | |
| .flc | Animation (Autodesk Animator) | |
| .fld | Folder (Charisma) | |
| .fli | Tex font library (EmTeX) | |
| .fli | Animation (Autodesk Animator) | |
| .flm | Film Roll (AutoCAD/AutoShade) | |
| .flo | Micrografx FlowCharter | |
| .flt | Filter file (Micrografx Picture Publisher) | |
| .flt | Support file (Asymetrix ToolBook) - graphics filter | |
| .flx | Compiled binary (DataFlex) | |
| .fm | Spreatsheet (FileMaker Pro) | |
| .fm1 | Spreadsheet (Lotus 1-2-3 release 2.x) | |
| .fm3 | Device driver (Harvard Graphics 3.0) | |
| .fm3 | Spreadsheet (Lotus 1-2-3 release 3.x) | |
| .fmb | File Manager Button bar (WordPerfect for Win) | |
| .fmf | Font or icon file (IBM LinkWay) | |
| .fmk | Makefile (Fortran PowerStation) | |
| .fmo | Compiled format file (dBASE IV) | |
| .fmt | Format file (dBASE IV - FoxPro - Clipper 5 - dBFast) | |
| .fmt | Style sheet (Sprint) | |
| .fn3 | Font file (Harvard Graphics 3.0) | |
| .fnt | Font file (many) | |
| .fnx | Inactive font (Exact) | |
| .fo1 | Font file (Borland Turbo C) | |
| .fo2 | Font file (Borland Turbo C) | |
| .fol | Folder of saved messages (1st Reader) | |
| .fon | Dialing directory file (Telix) | |
| .fon | Font file (many - Windows 3.x font library) | |
| .fon | Log of all calls (Procomm Plus) | |
| .for | Fortran source code file | |
| .for | Form (WindowBase) | |
| .fot | Installed Truetype font (Windows Font Installer) | |
| .fox | FoxBase | |
| .fp | Configuration file (FoxPro) | |
| .fp3 | Filemaker Pro 3 | |
| .fpc | Catalog (FoxPro) | |
| .fpt | Memo (FoxPro) | |
| .fpw | Floorplan drawing (FloorPLAN plus for Windows) | |
| .fr3 | Renamed dBASE III+ form file (dBASE IV) | |
| .frf | Font (FontMonger) | |
| .frg | Uncompiled report file (dBASE IV) | |
| .frm | Form (Visual Basic) | |
| .frm | Report file (dBASE IV - Clipper 5 - dBFast) | |
| .frm | Text (order form) | |
| .fro | Compiled report file (dBASE IV) | |
| .frp | Form (PerForm PRO Plus - FormFlow) | |
| .frs | Screen Font Resource (WordPerfect for Win) | |
| .frt | Report memo (FoxPro) | |
| .frx | Report (FoxPro) | |
| .fsl | Form (Paradox for Windows) | |
| .fsm | Farandoyle Sample format music | |
| .fst | Linkable program (dBFast) | |
| .fsx | Data (Lotus 1-2-3) | |
| .ftm | Font file (Micrografx) | |
| .ftp | Configuration (FTP Software PC/TCP) | |
| .fw | Database (FrameWork) | |
| .fw2 | Database (Framework II) | |
| .fw3 | Database (Framework III) | |
| .fx | On-line guide (FastLynx) | |
| .fxd | Phonebook (FAXit) | |
| .fxp | Compiled format (FoxPro) | |
| .fxs | Fax Transmit Format graphics (WinFax) | |
| .g | Data chart (APPLAUSE) | |
| .g4 | GTX RasterCAD | |
| .g8 | Raw graphics (one byte per pixel) plane three (PicLab) | |
| .gam | Fax (GammaFax) | |
| .gbl | Global definitions (VAXTPU editor) | |
| .gc1 | Lisp source code (Golden Common Lisp 1.1) | |
| .gc3 | Lisp source code (Golden Common Lisp 3.1) | |
| .gca | GOCA graphics | |
| .gcd | Graphics | |
| .gdf | Dictionary file (GEOS) | |
| .ged | Editor's native file format (Arts & Letters) | |
| .ged | Graphics editor file (EnerGraphics) | |
| .gem | Vector graphics (GEM - Ventura Publisher) | |
| .gen | Compiled template (dBASE Application Generator) | |
| .gen | Generated text (Ventura Publisher) | |
| .geo | Geode (Geoworks) | |
| .gfb | Compressed GIF image created by GIFBLAST (gifblast.exe) | |
| .gft | Font (NeoPaint) | |
| .gib | Chart (Graph-in-the-Box) | |
| .gif | Graphics Interchange Format bitmap graphics (CompuShow) | |
| .giw | Presentation (Graph-in-the-Box for Windows) | |
| .gl | Animation (GRASP GRAphical System for Presentation) | |
| .glm | Datafile (Glim) | |
| .gls | Datafile (Across) | |
| .gly | Glossary (MS Word) | |
| .gmf | CGM graphics (APPLAUSE) | |
| .gmp | Geomorph tile map (SPX) | |
| .goc | Goc source code file (Geoworks) | |
| .goh | Goc header file (Geoworks) | |
| .gp | Geode parameter file (Geoworks Glue) | |
| .gp4 | "Group 4 - CALS ITU" | |
| .gph | Graph (Lotus 1-2-3/G) | |
| .gpk | Omnigo program package | |
| .gr2 | Screen driver (Windows 3.x) | |
| .gra | Datafile (SigmaPlot) | |
| .grb | Ms-DOS Shell Monitor file (MS-DOS 5) | |
| .grf | Graph file (Graph Plus - Charisma) | |
| .grp | Group file (Windows 3.x - Papyrus) | |
| .grp | Pictures group (PixBase) | |
| .gry | Raw GREY graphics | |
| .gs1 | Presentation (GraphShow) | |
| .gsd | Vector graphics (Professional Draw) | |
| .gsw | Worksheet (GraphShow) | |
| .gup | Data (PopMail) | |
| .gx2 | Show Partner graphics | |
| .gxl | Graphics library (Genus) | |
| .gz | Compressed file archive created by GZIP (GNU zip) | |
| .h | Header file | |
| .h! | On-line help file (Flambeaux Help! Display Engine) | |
| .h++ | Header file (C++) | |
| .h-- | Header file (Sphinx C--) | |
| .ha | Compressed file archive created by HA (ha098.zip) | |
| .hap | Compressed file archive created by HAP (hap303re.zip) | |
| .hbk | Handbook (Mathcad) | |
| .hdf | Hierarchical Data File graphics (SDSC Image Tools) | |
| .hdf | Help file (Help Development Kit) | |
| .hdl | Alternate download file listing (Procomm Plus) | |
| .hdr | Pc-File+ Database header | |
| .hdr | Datafile (Egret) | |
| .hdr | Message header text (Procomm Plus - 1st Reader) | |
| .hdw | Vector graphics (Harvard Draw) | |
| .hdx | Help index (AutoCAD - Zortech C++) | |
| .hex | Hex dump | |
| .hfi | Hp Font Info file (GEM) | |
| .hgl | Hp Graphics Language graphics | |
| .hh | C++ header file | |
| .hhh | Precompiled header file (Power C) | |
| .hhp | Help information for remote users (Procomm Plus) | |
| .hin | Molecule (HyperChem) | |
| .hit | "Data file (Nonags Dialog Killer DKill)" | |
| .hlb | Help library (VAX) | |
| .hlp | Help information | |
| .hmm | Alternate Mail Read option menu (Procomm Plus) | |
| .hnc | CNC program files Heidenhain (?) dialog | |
| .hof | Hall Of Fame (game scores) | |
| .hp8 | Ascii text HP Roman8 character set (NewWave Write) | |
| .hpf | Hp LaserJet fonts (PageMaker) | |
| .hpg | HPGL plotter file vector graphics (AutoCad - Harvard Graphics) | |
| .hpi | Font information file (GEM) | |
| .hpj | Help project (MS Help Compiler) | |
| .hpk | Compressed file archive created by HPACK (hpack75.zip) | |
| .hpl | HP Graphics | |
| .hpm | Emm text (HP NewWave) | |
| .hpm | Alternate Main menu for privileged users (Procomm Plus) | |
| .hpp | C++ header file (Zortech C++) | |
| .hqx | Compressed Macintosh ASCII archive created by BINHEX (xbin23.zip) | |
| .hrf | Graphics (Hitachi Raster Format) | |
| .hrm | Alternate Main menu for limited/normal users (Procomm Plus) | |
| .hs2 | Monochrome image (Postering) | |
| .hsi | Handmade Software Inc. graphics - almost JPEG (Image Alchemy) | |
| .hst | History file (Procomm Plus) | |
| .htm | HyperText Markup Language document | |
| .html | HyperText Markup Language document | |
| .htx | Hypertext file | |
| .hwd | Presentation (Hollywood) | |
| .hxm | Alternate Protocol Selection menu for all users (Procomm Plus) | |
| .hxx | C++ header file | |
| .hy1 | Hyphenation algorithms (Ventura Publisher) | |
| .hy2 | Hyphenation algorithms (Ventura Publisher) | |
| .hyc | Data (WordPerfect) | |
| .hyd | Hyphenation dictionary (WordPerfect for Win) | |
| .hyp | Compressed file archive created by HYPER (hyper25.zip) | |
| .i | Intermediate file (Borland C++ 4.5) | |
| .iax | Bitmap graphics (IBM Image Access eXecutive) | |
| .ibm | Compressed file archive created by ARCHDOS (Internal IBM only) | |
| .ica | Bitmap graphics (Image Object Content Architecture) | |
| .icb | Bitmap graphics | |
| .icn | Icon source code file | |
| .ico | Icon (Windows 3.x) | |
| .icon | Sun icon and cursor | |
| .id | Disk identification file | |
| .ide | Project (Borland C++ 4.5) | |
| .idw | Vector graphics (IntelliDraw) | |
| .idx | Index (many - FoxPro) | |
| .ifd | Form (JetForm Design) | |
| .iff | Interchange File Format bitmap graphics/sound (Amiga) | |
| .iff | Sun TAAC Image File Format (SDSC Image Tool) | |
| .ifp | Script (KnowledgeMan) | |
| .ifs | Fractal image compressed file (Yuvpak) | |
| .ifs | System file (OS/2) hpfs.ifs | |
| .igf | Inset Systems graphics - Hijaak | |
| .il | Icon Library | |
| .ilb | Data (Scream Tracker) | |
| .ilk | Outline of program's format (MS ILink incremental linker) | |
| .im8 | Sun raster graphics | |
| .ima | "Mirage vector graphics (EGO Chart Autumn)" | |
| .image | Mac compressed format | |
| .img | Bitmap graphics (Ventura Publisher - GEM Paint) | |
| .imp | Spreadsheet (Lotus Improv) | |
| .imq | Image presentation (ImageQ) | |
| .in$ | Installation file (HP NewWave) | |
| .in3 | Input device driver (Harvard Graphics 3.0) | |
| .inb | Test script (Vermont HighTest) | |
| .inc | Include file (several programming languages) | |
| .ind | Index (dBASE IV) | |
| .inf | Type 1 LaserJet font information file (soft font installers) | |
| .inf | Information text file (ASCII) | |
| .inf | Install script | |
| .ini | Initialization file | |
| .ink | Pantone reference fills file (CorelDRAW) | |
| .ins | Data (WordPerfect) | |
| .ins | Installation script (1st Reader) | |
| .ins | Instrument music file (Adlib) | |
| .int | Borland Interface Units | |
| .int | Program saved in Internal (semi-compiled) format (Signature) | |
| .inx | Index (Foxbase) | |
| .io | Compressed file archive created by CPIO | |
| .iob | 3d graphics database in TDDD format | |
| .ioc | Organizational chart (Instant ORGcharting!) | |
| .ion | 4dos descript.ion file (file descriptions) | |
| .ipl | Pantone Spot reference palette file (CorelDRAW) | |
| .irs | Resource (WordPerfect) | |
| .isd | Spelling Checker dictionary (RapidFile) | |
| .ish | Compressed file archive created by ISH | |
| .iso | ISO-9660 table | |
| .it | Settings (intalk) | |
| .itf | Interface file (JPI TopSpeed Pascal) | |
| .iw | Presentation flowchart (IconAuthor - HSC InterActive) | |
| .iwa | Text file (IBM Writing Assistant) | |
| .iwp | Text file (Wang) | |
| .izt | Izl binary token file (IZL) | |
| .jas | Graphics | |
| .jav | Java source code file | |
| .jbd | Datafile (SigmaScan) | |
| .jbx | Project file (Project Scheduler 4) | |
| .jet | Fax (Hybrid JetFax) | |
| .jff | Bitmap graphics (JPEG File Interchange Format) | |
| .jor | Journal file SQL | |
| .jou | Journal backup (VAX Edt editor) | |
| .jpc | Graphics (Japan PIC) | |
| .jpg | Bitmap graphics (Joint Photography Experts Group) | |
| .jt | JT Fax | |
| .jtf | Fax (Hayes JT Fax) | |
| .jtf | Bitmap graphics (JPEG Tagged Interchange Format) | |
| .jw | Text document (JustWrite) | |
| .jwl | Library (JustWrite) | |
| .jzz | Spreatsheet (Jazz) | |
| .kar | Midi file with karaoke word track | |
| .kb | Keyboard script (Borland C++ 4.5) | |
| .kb | Program source (Knowledge Pro) | |
| .kbd | Keyboard mapping (LocoScript - Signature - Procomm Plus) | |
| .kbm | Keyboard mapping (Reflection 4.0) | |
| .kcl | Lisp source code (Kyoto Common Lisp) | |
| .kex | Macro (KEDIT) | |
| .key | Datafile (Forecast Pro) | |
| .key | Keyboard macros | |
| .key | Security file eg. Shareware Registration info | |
| .kfx | Kofax | |
| .kpp | Toolpad (SmartPad) | |
| .kps | Ibm KIPS bitmap graphics | |
| .kyb | Keyboard mapping (FTP Software PC/TCP) | |
| .l | Lex source code file | |
| .l | Lisp source code file | |
| .l | Linker directive file (WATCOM wlink) | |
| .lab | Datafile (NCSS - SOLO) | |
| .lab | Mailing labels (Q+E for MS Excel) | |
| .lay | Word chart layout (APPLAUSE) | |
| .lbg | Label generator data (dBASE IV) | |
| .lbl | Label (dBASE IV - Clipper 5 - dBFast) | |
| .lbm | Bitmap graphics (DeluxePaint) | |
| .lbm | Linear bitmap graphics (XLib) | |
| .lbo | Compiled label (dBASE IV) | |
| .lbr | Compressed file archive created by LU (lue220.arc) | |
| .lbr | Display driver (Lotus 1-2-3) | |
| .lbt | Label memo (FoxPro) | |
| .lbx | Label (FoxPro) | |
| .lcf | Linker Control File (Norton Guides compiler) | |
| .lck | Lockfile (Paradox) | |
| .lcl | Data (FTP Software PC/TCP) | |
| .lcn | Lection (WordPerfect) | |
| .lcs | Datafile (ACT! History Files) | |
| .lcw | Spreadsheet (Lucid 3-D) | |
| .ld | Long Distance codes file (Telix) | |
| .ld1 | Overlay file (dBASE) | |
| .ldb | Data (MS Access) | |
| .ldf | Library definition file (Geoworks Glue) | |
| .les | Lesson (check *.cbt) | |
| .lev | Level file (NetHack 3.x) | |
| .lex | Lexicon (dictionary) (many) | |
| .lft | Laser printer font (ChiWriter) | |
| .lg | Logo procedure definitions (LSRHS Logo) | |
| .lgf | "Text file (Legal Eagle) standard forms supplied with program" | |
| .lgo | Logo for header and footer (SuperFax) | |
| .lgo | Startup logo code (Windows 3.x) | |
| .lha | Compressed file archive created by LHA/LHARC (lha255b.exe) | |
| .lhs | Literate Haskell source file | |
| .lhz | LHA compression file | |
| .lhw | Compressed Amiga file archive created by LHWARP | |
| .lib | Library file (several programming languages) | |
| .lif | Logical Interchange Format data file (Hewlett-Packard) | |
| .lif | Compressed file archive | |
| .lim | Compressed file archive created by LIMIT (limit12.zip) | |
| .lin | Line types (AutoCAD) | |
| .lis | Listing (VAX) | |
| .lj | Text file for HP LJ II printer | |
| .ll3 | Laplink III related file (document) (LapLink III) | |
| .lnk | Linker response file (.RTLink) | |
| .lod | Load file | |
| .log | Log file | |
| .lpc | Printer driver (TEKO) | |
| .lrf | Linker response file (MS C/C++) | |
| .lrs | Language Resource File (WordPerfect for Win) | |
| .ls | "Data file (Freeware Dictionary Project) user generated lists" | |
| .lsp | Lisp source code file (Xlisp) | |
| .lss | Spreadsheet (Legato) | |
| .lst | Keyboard macro (1st Reader) | |
| .lst | List file (archive index - compiler listfile) | |
| .lst | Spool file (Oracle) | |
| .ltm | Form (Lotus Forms) | |
| .lwd | Text document (LotusWorks) | |
| .lwp | Lotus WordPro document | |
| .lzd | Difference file for binaries (Ldiff 1.20) | |
| .lzh | Compressed file archive created by LHA/LHARC (lha255b.exe) | |
| .lzs | Compressed file archive created by LARC (larc333.zip) | |
| .lzw | Compressed Amiga file archive created by LHWARP | |
| .m | Function (program) (Matlab) | |
| .m | Macro module (Brief) | |
| .m | Standard package (Mathematica) | |
| .m11 | Text file (MASS11) | |
| .m3 | Modula 3 source code file | |
| .m3d | 3d animation macro | |
| .m4 | M4 preprocessor file (unix) | |
| .m_u | "Backup of boot sector FAT and boot dir (MazeGold)" | |
| .ma3 | Macro (Harvard Graphics 3.0) | |
| .mac | Bitmap graphics (Macintosh MacPaint) | |
| .mac | Macro | |
| .mag | Woody Lynn's MAG graphics format (MPS Magro Paint System) | |
| .mai | Mail (VAX) | |
| .mak | Makefile | |
| .mak | Project file (Visual Basic) | |
| .man | Command manual | |
| .map | Color palette | |
| .map | Format data (Micrografx Picture Publisher) | |
| .map | Linker map file | |
| .map | Map (Atlas MapMaker) | |
| .map | Network map (AccView) | |
| .mar | Assembly program (VAX Macro) | |
| .mas | Smartmaster set (Freelance Graphics) | |
| .mat | Data file (Matlab) | |
| .max | Max source code file | |
| .mb | Memo field values for database (Paradox) | |
| .mbk | Multiple index file backup (dBASE IV) | |
| .mbx | Mailbox (Eudora/Zerberus) | |
| .mcc | Configuration file (Mathcad) | |
| .mcd | Document (Mathcad) | |
| .mcf | Font file (Mathcad) | |
| .mci | Mci command script (Media Control Interface) | |
| .mcp | Application script (Capsule) | |
| .mcp | Printer driver (Mathcad) | |
| .mcs | MathCAD format | |
| .mcw | Text file (MacWrite II) | |
| .md | Compressed file archive created by MDCD (mdcd10.arc) | |
| .mda | Data (MS Access) | |
| .mdb | Database (MS Access) | |
| .mdl | Model (3D Design Plus) | |
| .mdl | Spreadsheet (CA-Compete!) | |
| .mdm | Modem definition (TELIX) | |
| .mdt | Data table (MS ILink incremental linker) | |
| .mdx | Multiple index file (dBASE IV) | |
| .me | Usually ASCII text file READ.ME | |
| .meb | Macro Editor bottom overflow file (WordPerfect Library) | |
| .med | Macro Editor delete save (WordPerfect Library) | |
| .med | Music (OctaMED) | |
| .mem | Macro Editor macro (WordPerfect Library) | |
| .mem | Memory variable save file (Clipper - dBASE IV - FoxPro) | |
| .meq | Macro Editor print queue file (WordPerfect Library) | |
| .mer | Macro Editor resident area (WordPerfect Library) (vakioalue) | |
| .mes | Macro Editor work space file (WordPerfect Library) | |
| .mes | Message | |
| .met | Macro Editor top overflow file (WordPerfect Library) | |
| .met | Document (Omnipage Pro) | |
| .meu | Menu group (DOS Shell) | |
| .mex | Mex file (executable command) (Matlab) | |
| .mex | Macro Editor expound file (WordPerfect Library) | |
| .mf | Metafont text file | |
| .mgf | Font (Micrografx) | |
| .mib | Snmp MIB file | |
| .mid | Standard MIDI file (music synthetizers) | |
| .miff | ImageMagick file format | |
| .mii | Datafile (MicroStat-II) | |
| .mil | Group 4 | |
| .mix | Object file (Power C) | |
| .mk | Makefile | |
| .mke | Makefile (MS Windows SDK) | |
| .mki | Japanese graphics MAKIchan format (MagView 0.5) | |
| .mks | Data (TACT) | |
| .ml3 | Project (Milestones 3.x) | |
| .mlb | Macro library file (Symphony) | |
| .mm | Text file (MultiMate Advantage II) | |
| .mmf | Mail message file (MS Mail) | |
| .mmm | Movie (RIFF RMMP format) (MacroMind Director 3.x) | |
| .mmo | Memo writer file (RapidFile) | |
| .mmp | Output video format from Bravado board | |
| .mnd | Menu source (AutoCAD Menu Compiler) | |
| .mng | Map (DeLorme Map'n'Go) | |
| .mnt | Menu memo (FoxPro) | |
| .mnu | Advanced macro (HP NewWave) | |
| .mnu | Menu (AutoCAD Menu Compiler - Norton Commander - Signature) | |
| .mnx | Compiled menu (AutoCAD) | |
| .mnx | Menu (FoxPro) | |
| .mny | Account book (MS Money) | |
| .mob | Device definition (PEN Windows) | |
| .mod | Modula-2 source code file (Clarion Modula-2) | |
| .mod | Windows kernel module | |
| .mod | Music (FastTracker - many) | |
| .mon | Monitor description (ReadMail) | |
| .mov | Movie (AutoCAD AutoFlix) | |
| .mp2 | Mpeg audio file (xing) | |
| .mpc | Calender file (MS Project) | |
| .mpg | Mpeg animation | |
| .mpnt | Macintosh MacPaint | |
| .mpm | Mathplan macro (WordPerfect Library) | |
| .mpp | Project file (MS Project) | |
| .mpr | Generated program (FoxPro) | |
| .mpt | Bitmap graphics (Multipage TIFF) | |
| .mpv | View file (MS Project) | |
| .mpx | Compiled menu program (FoxPro) | |
| .mrb | Multiple Resolution Bitmap graphics (MS C/C++) | |
| .mrk | Markup - Informative Graphics | |
| .mrs | Macro Resource file (WordPerfect for Win) | |
| .msc | Microsoft C makefile | |
| .msg | Message | |
| .msp | Bitmap graphics (Microsoft Paint) | |
| .mss | Manuscript text file (Perfect Writer - Scribble - MINCE - Jove) | |
| .mst | Minispecification file (Prosa) | |
| .mst | Setup script (MS Windows SDK) | |
| .msw | Text file (MS Word) | |
| .msx | Compressed CP/M file archive created by MSX | |
| .mth | Math file (Derive) | |
| .mtm | Multitracker Module music | |
| .mtw | Datafile (Minitab) | |
| .mu | Menu (Quattro Pro) | |
| .mus | Sound file (MusicTime) | |
| .mvf | Stop frame file (AutoCAD AutoFlix) | |
| .mvi | Movie command file (AutoCAD AutoFlix) | |
| .mvw | Log file (Saber LAN) | |
| .mwf | Animation (ProMotion) | |
| .mxt | Data (MS C) | |
| .myp | Presentation (MM Make Your Point) | |
| .nap | Naplps file (VideoShow) (EnerGraphics) | |
| .nb | Text file (Nota Bene) | |
| .nc | Graphics (netcdf) | |
| .nc | Instructions for NC (Numerical Control) machine (CAMS) | |
| .ncc | Cnc (Computer Numeric Control) control file (CamView 3D) | |
| .ncd | Norton Change Directory support file (Norton Commander) | |
| .ndb | Network database (Intellicom - Compex) | |
| .ndx | Index file (dBASE II - III - IV - dBFast) | |
| .neo | Raster graphics (Atari Neochrome) | |
| .net | Network configuration/info file | |
| .new | New info | |
| .nfo | Info file | |
| .ng | Online documentation database (Norton Guide) | |
| .nlm | Netware Loadable Module | |
| .nlx | Form (FormWorx 3.0) | |
| .np | Project schedule (Nokia Planner) (Visual Planner 3.x) | |
| .npi | Source for DGEN.EXE intepreter (dBASE Application Generator) | |
| .nst | Music (NoiseTracker) | |
| .nt | Startup files (Windows NT) | |
| .ntr | Executable ASCII text file (strip header and rename) (netrun31.zip) | |
| .nts | Tutorial (Norton) | |
| .nts | Executable ASCII text file (strip header and rename) (netsend1.zip) | |
| .ntx | Index (Clipper 5) | |
| .nuf | Message for new users on their 1st call (Procomm Plus) | |
| .nws | Info text file (latest news) (ASCII) | |
| .nxt | Sound (NeXT format) | |
| .o | Object file (unix - Atari - GCC) | |
| .o$$ | Outfile (Sprint) | |
| .oaz | Fax (NetFax Manager) | |
| .ob | Object cut/paste file (IBM LinkWay) | |
| .obj | Object code (Intel Recolatable Object Module) | |
| .obr | Object browser data file (Borland C++) | |
| .obs | Script (ObjectScript) | |
| .obv | Visual interface (ObjectScript) | |
| .ocf | Object Craft File (Object Craft) | |
| .ocr | Incoming fax transcribed to text (FAXGrapper) | |
| .ocx | OLE custom control | |
| .odl | Type library source (Visual C++) | |
| .ofd | Form definition (ObjectView) | |
| .off | Object File Format vector graphics | |
| .okt | Music (Oktalizer) | |
| .olb | Object library (VAX) | |
| .old | Backup file | |
| .oli | Text file (Olivetti) | |
| .oom | Swap file (Shroom) | |
| .opn | Active options (Exact) | |
| .opt | Optimize support file (QEMM) | |
| .opw | Organization chart (Org Plus for Windows) | |
| .opx | Inactive options (Exact) | |
| .ora | Parameter file (Oracle) | |
| .org | Calendar file (Lotus Organizer) | |
| .otl | Outline font description (Z-Soft Type Foundry) | |
| .otx | Text file (Olivetti Olitext Plus) | |
| .out | Output file | |
| .ov1 | Overlay file (part of program to be loaded when needed) | |
| .ov2 | Overlay file (part of program to be loaded when needed) | |
| .ovd | Datafile (ObjectVision) | |
| .ovl | Overlay file (part of program to be loaded when needed) | |
| .ovr | Overlay file (part of program to be loaded when needed) | |
| .ozm | Sharp Organizer memo bank | |
| .ozp | Sharp Organizer telephone bank | |
| .p | Pascal source code file | |
| .p | Rea-C-Time application parameter file (ReaGeniX code generator) | |
| .p | Picture file (APPLAUSE) | |
| .p10 | Tektronix Plot10 | |
| .p16 | Music (16 channels) (ProTracker Studio 16) | |
| .p22 | Patch file (Patch22) | |
| .pa1 | Worktable (PageAhead) | |
| .pac | Stad Image (graphics ?) | |
| .pac | Package (SBStudio II) | |
| .pad | Keypad definition (Telemate) | |
| .pak | Compressed file archive created by PAK (pak251.exe) | |
| .pal | Color palette | |
| .pan | Printer-specific file (copy to coreldrw.ink) (CorelDRAW) | |
| .par | Parts application (Digitalk PARTS) | |
| .par | Parameter file (Fractint) | |
| .par | Permanent output file (Windows 3.x) | |
| .pas | Pascal source code file | |
| .pat | Hatch patterns (AutoCAD - Photostyler) | |
| .pat | Vector fill files (CorelDRAW) | |
| .pb | Fax (FAXability Plus) | |
| .pb | Phonebook (WinFax Pro) | |
| .pb | Setup file (PixBase) | |
| .pb1 | Document (First Publisher for Windows) | |
| .pba | Powerbasic BASIC source code (Genus) | |
| .pbd | Phone book (FaxNOW! - Faxit) | |
| .pbi | Powerbasic include file (Genus) | |
| .pbi | Profiler Binary Input (MS Source Profiler) | |
| .pbl | Powerbasic library (Genus) | |
| .pbm | Pbm Portable Bit Map graphics | |
| .pbm | Planar bitmap graphics (XLib) | |
| .pbo | Profiler Binary Output (MS Source Profiler) | |
| .pbt | Profiler Binary Table (MS Source Profiler) | |
| .pc | Text file containing IBM PC specific info | |
| .pc3 | Custom palette (Harvard Graphics 3.0) | |
| .pc8 | Ascii text IBM8 character set (NewWave Write) | |
| .pcc | Cutout picture vector graphics (PC Paintbrush) | |
| .pcd | Graphics (Kodak PhotoCD) | |
| .pcf | Profiler Command File (MS Source Profiler) | |
| .pch | Patch file | |
| .pch | Precompiled header (MS C/C++) | |
| .pcj | Multimedia authoring tool graphics (IBM's Linkaway-Live) | |
| .pck | Pickfile (Turbo Pascal) | |
| .pcl | HP-PCL graphics data (HP Printer Control Language) | |
| .pcm | LaserJet cartridge information | |
| .pct | Bitmap graphics (Macintosh b&w PICT1 - color PICT2) | |
| .pcw | Text file (PC Write) | |
| .pcx | Bitmap graphics (PC Paintbrush) | |
| .pda | Bitmap graphics | |
| .pdb | Data (TACT) | |
| Adobe Acrobat Portable Document Format | ||
| Package Definition File | ||
| Graphics file (ED-SCAN 24bit format) | ||
| .pdl | Project Description Language file (Borland C++ 4.5) | |
| .pds | Pds graphics | |
| .pds | Pldasm source code file (hardware assembly) | |
| .pdv | Printer driver (Paintbrush) | |
| .pdw | Document (Professional Draw) | |
| .peb | Program Editor bottom overflow file (WordPerfect Library) | |
| .ped | Program Editor delete save (WordPerfect Library) | |
| .pem | Program Editor macro (WordPerfect Library) | |
| .peq | Program Editor print queue file (WordPerfect Library) | |
| .per | Program Editor resident area (WordPerfect Library) (vakioalue) | |
| .pes | Program Editor work space file (WordPerfect Library) | |
| .pet | Program Editor top overflow file (WordPerfect Library) | |
| .pfa | Type 3 font file (unhinted PostScript font) | |
| .pfb | Type 1 font file | |
| .pfc | Text file (First Choice) | |
| .pfk | Programmable function keys (XTreePro) | |
| .pfm | Windows Type 1 font metric file | |
| .pfs | Database (PFS:FILE) - text file (PFS:Write) | |
| .pft | Printer font (ChiWriter) | |
| .pg | Page cut/paste file (IBM LinkWay) | |
| .pgi | Printer Graphics File device driver (PGRAPH library) | |
| .pgl | HPGL 7475A plotter - vector graphics | |
| .pgm | Portable Grayscale bitMap graphics | |
| .pgm | Program (Signature) | |
| .pgp | Support file (Pretty Good Privacy RSA System) | |
| .pgs | Manual page (man4dos) | |
| .ph | Optimized .goh file (Geoworks) | |
| .ph | Perl header file | |
| .ph | Phrase-table (MS C/C++) | |
| .phn | Phone list (UltraFax - QmodemPro) | |
| .pho | Phone database (Metz Phone for Windows) | |
| .phr | Phrases (LocoScript) | |
| .pic | Pixar picture file (SDSC Image Tool) | |
| .pic | Bitmap graphics (Macintosh b&w PICT1 - color PICT2) | |
| .pic | Bitmap graphics (many eg. Lotus 1-2-3 - PC Paint) | |
| .pif | Program Information File (Windows 3.x) | |
| .pif | Vector graphics GDF format (IBM mainframe computers) | |
| .pin | Data file (Epic Pinball) | |
| .pit | Compressed Mac file archive created by PACKIT (unpackit.zoo) | |
| .pix | Alias image file (SDSC Image Tool) | |
| .pj | Project (CA-SuperProject) | |
| .pjt | Project memo (FoxPro) | |
| .pjx | Project (FoxPro) | |
| .pk | Packed bitmap font bitmap file (TeX DVI drivers) | |
| .pka | Compressed file archive created by PKARC | |
| .pkg | Installer script (Next) | |
| .pkt | Fidonet packet | |
| .pl | Perl source code file | |
| .pl | Prolog source code file | |
| .pl | Property List font metric file (TeX) | |
| .pl | Palette (Harvard Graphics) | |
| .pl1 | Room plan (3D Home Architect) | |
| .pl3 | Chart palette (Harvard Graphics 3.0) | |
| .plb | Library (FoxPro) | |
| .plc | Add-in file (functions - macros - applications) (Lotus 1-2-3) | |
| .pll | Pre-linked library (Clipper 5) | |
| .pln | Spreadsheet (WordPerfect for Win) | |
| .plt | Hpgl plotter file vector graphics (AutoCAD) | |
| .plt | Palette | |
| .plt | Pre-linked transfer file (Clipper 5) | |
| .ply | Data (PopMail) | |
| .ply | Presentation screen (Harvard Spotlight) | |
| .pm | Bitmap graphics (Presentation Manager) | |
| .pm3 | Document (PageMaker 3) | |
| .pm4 | Document (PageMaker 4) | |
| .pm5 | Document (PageMaker 5) | |
| .pmc | Graphics (A4TECH Scanner) | |
| .pmm | Program file (Amaris BTX/2) | |
| .pn3 | Printer device driver (Harvard Graphics 3.0) | |
| .png | Bitmap graphics (Portable Network Graphics) | |
| .pnm | Pbm Portable aNy Map (PNM) graphics | |
| .pnt | Macintosh painting | |
| .pnt | Qwk reader pointer file (MarkMail 2.x) | |
| .poh | Optimized .goh file (Geoworks) | |
| .pop | Messages index (PopMail) | |
| .pop | Pop-up menu object (dBASE Application Generator) | |
| .pov | Raytraced graphics image (Persistence Of Vision) | |
| .pow | Chord chart (PowerChords) | |
| .pp | Compressed Amiga file archive created by POWERPACKER | |
| .ppb | Button bar for Print Preview (WordPerfect for Win) | |
| .ppd | PostScript Printer Description | |
| .ppl | Polaroidpaletteplus ColorKey device driver (Harvard Graphics 3.0) | |
| .ppm | Portable Pixel Map graphics | |
| .ppo | Pre-processor output (Clipper 5) | |
| .ppp | Publication (PagePlus) | |
| .pps | Storyboard (Personal Producer) | |
| .pps | Microsoft PowerPoint slide show | |
| .ppt | Microsoft PowerPoint | |
| .pr2 | Presentation (Aldus Persuasion 2.x) | |
| .pr2 | Printer driver (dBASE IV) | |
| .pr3 | Postscript printer driver (dBASE IV) | |
| .pr3 | Presentation (Aldus Persuasion 3.x) | |
| .prd | Printer driver (many) | |
| .pre | Presentation (Freelance Graphics) | |
| .pre | Settings (Programmer's WorkBench - MS C/C++) | |
| .prf | Pixel Run Format graphics (Improces - Fastgraph) | |
| .prf | Printer driver (dBASE IV) | |
| .prf | Profiler output | |
| .prg | Program (Atari) | |
| .prg | Program source (dBASE IV - FoxPro - Clipper 5 - dBFast) | |
| .pri | Printer definitions (LocoScript) | |
| .prj | Project | |
| .prm | Parameters | |
| .prn | Printer driver (Signature) | |
| .prn | Text file (Lotus 1-2-3 - Symphony) | |
| .pro | Prolog source code file | |
| .pro | Graphics profile file (DOS) | |
| .prs | Printer Resource eg. fonts (WordPerfect for Win) | |
| .prs | Presentation (Harvard Graphics Win) | |
| .prs | Procedure (dBASE IV) | |
| .prt | Printer driver (Dr.Halo) | |
| .prx | Compiled program (FoxPro) | |
| .ps | Postscript file (text/graphics) (ASCII) | |
| .psd | Graphics (Photoshop 3.0) | |
| .pse | Bitmap graphics (IBM printer Page SEgment) | |
| .psf | Outline PostScript printer font (ChiWriter) | |
| .psm | Music (MASI - ProTracker) | |
| .psm | Symbol table of IDE (Turbo Pascal) | |
| .psp | Procedure (Prodea Synergy) | |
| .pt3 | Device driver (Harvard Graphics 3.0) | |
| .pt3 | Template (PageMaker 3) | |
| .pt4 | Template (PageMaker 4) | |
| .ptb | Script (PubTech BatchWorks) | |
| .ptm | Macro (PubTech BatchWorks) | |
| .ptr | Qwk reader pointer file (QMail) | |
| .pub | Page template (MS Publisher) | |
| .pub | Public key ring file (Pretty Good Privacy RSA System) | |
| .pub | Publication (Ventura Publisher - 1st Publisher) | |
| .put | Compressed file archive created by PUT (put334.zip) | |
| .pvd | Script (Instalit) | |
| .pvl | Library (Instalit) | |
| .pvt | Local Fidonet pointlist | |
| .pw | Text file (Professional Write) | |
| .pwl | Password List | |
| .pwp | Text document (Professional WritePlus) | |
| .px | Primary database index (Paradox) | |
| .py | Python script file | |
| .pyc | Compiled PYTHON 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) | |
| .qag | Quick Access Group (Norton Desktop) | |
| .qap | Application (Omnis Quartz) | |
| .qbe | Saved query (Query By Example) (dBASE IV - Quattro Pro) | |
| .qbo | Compiled query (dBASE IV) | |
| .qbw | Spreadsheet (QuickBooks for Windows) | |
| .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) | |
| .qd4 | Data file - segment 4 (Omnis Quartz) | |
| .qd5 | Data file - segment 5 (Omnis Quartz) | |
| .qd6 | Data file - segment 6 (Omnis Quartz) | |
| .qd7 | Data file - segment 7 (Omnis Quartz) | |
| .qd8 | Data file - segment 8 (Omnis Quartz) | |
| .qd9 | Data file - segment 9 (Omnis Quartz) | |
| .qdb | Quicken database | |
| .qdf | Quicken database | |
| .qdk | Backup of startup files created by Optimize (QEMM) | |
| .qdt | Quicken database | |
| .qdv | Graphics (Steve Blackstock Giffer) | |
| .qef | Query file (Q+E for MS Excel) | |
| .qel | Quicken database | |
| .qfx | Fax (QuickLink) | |
| .qlb | Quick library (MS C/C++) | |
| .qlc | Data (PostScript help file) atmfonts.qlc | |
| .qlp | Printer driver (QuickLink) | |
| .qm4 | Options or services file (QMail 4.x Mail Door) | |
| .qmd | Quicken database | |
| .qpr | Generated query program (FoxPro) | |
| .qpr | Print queue device driver (OS/2) | |
| .qpx | Compiled query program (FoxPro) | |
| .qrs | Equation Editor support file (WordPerfect for Win) | |
| .qrt | Qrt ray tracing graphics | |
| .qry | Query (dBASE IV) | |
| .qsd | Quicken database | |
| .qt | Quicktime movie (animation) | |
| .qwk | Qwk reader message file | |
| .qxd | Document (QuarkXPress) | |
| .qxl | Element library (QuarkXPress) | |
| .r | Ratfor (FORTRAN preprosessor) file | |
| .r8 | Raw graphics (one byte per pixel) plane one (PicLab) | |
| .r8l | LaserJet landscape font | |
| .r8p | Pcl 4 bitmap font file (Intellifont) | |
| .ra | Music (RealAudio) | |
| .ram | Ramfile (RealAudio) | |
| .rar | Compressed file archive created by RAR (rar1_402.exe) | |
| .ras | Sun Rasterfile graphics | |
| .rat | Datafile (RATS) | |
| .raw | Raw RGB 24-bit graphics | |
| .rbf | Datafile (Rbase) | |
| .rc | Resource script (MS C/C++ - Borland C++) | |
| .rc | Configuration (emacs) | |
| .rcg | Netscape newsgroup file (netsc.rcg) | |
| .rdf | Compiled UIC source code (Geoworks UI Compiler) | |
| .rdi | Device-independent bitmap file (RIFF RDIB format) | |
| .rdx | Datafile (Reflex) | |
| .rec | Datafile (EpiInfo) | |
| .rec | Record file (Sprint) | |
| .rec | Recorded macro file (Windows 3.x) | |
| .red | Path info (Clarion Modula-2) | |
| .ref | Cross-reference | |
| .reg | Ole Registration (Windows 3.x) | |
| .reg | Registration (Corel programs) | |
| .rem | Remarks | |
| .rep | Qwk reader reply file | |
| .rep | Report (Report Designer - CodeReporter - DataBoss) | |
| .req | Request | |
| .res | Compiled resource (MS C/C++ - Borland C++) | |
| .res | Dbase resources (dBASE IV) | |
| .rev | Revision file (Geoworks) | |
| .rex | Rexx source code file | |
| .rex | Report definition (Oracle) | |
| .rez | Resource file | |
| .rf | Sun raster graphics | |
| .rft | Dca/RFT Revisable Format Text file (IBM DisplayWrite 4.0-5.1) | |
| .rgb | Sgi RGB image file (SDSC Image Tool) | |
| .rgx | Symbol tables etc. info (ReaGeniX code generator) | |
| .rh | Resource header file (Borland C++ 4.5) | |
| .ri | Data (Lotus 1-2-3) | |
| .ria | Alpharel Group IV raster graphics | |
| .rib | Graphics in Renderman format (3DReality) | |
| .ric | Fax (Ricoh) | |
| .rif | Riff bitmap graphics (Fractal Design Painter) | |
| .rip | Graphics (Remote Access) | |
| .rix | Bitmap graphics (ColorRIX VGA Paint) | |
| .rl4 | Bitmap graphics | |
| .rl8 | Bitmap graphics | |
| .rla | Wavefront raster image file (SDSC Image Tool) | |
| .rlb | Data (Harvard Graphics Win) hgw.rlb | |
| .rlc | Graphics 1bit/pixel scanner output | |
| .rle | Utah Run Length Encoded raster graphic (SDSC Image Tool) | |
| .rlz | Realizer source code file (CA-Realizer) | |
| .rmi | Midi file (RIFF RMID format) | |
| .rmk | Makefile (Clipper RMake) | |
| .rn | Xpl program for Nota Bene users | |
| .rnd | Rendering Slide (AutoCAD AutoShade) | |
| .rnl | GTX Runlength raster graphics | |
| .rno | Runoff file (VAX) | |
| .rol | Fm music Adlib Music File (Roland) | |
| .rpd | Database (RapidFile) | |
| .rpl | Text document (Replica) | |
| .rpt | Report | |
| .rs | Data file (Amiga Resource - Reassembler) | |
| .rs_ | Resource fork of a Macintosh file (Mac-ette) | |
| .rsc | Resource file | |
| .rsp | Response file | |
| .rtf | Rich Text Format text file (many - Windows Word) | |
| .rtf | Windows Help file script | |
| .rtl | Run Time Library (NU 7.0) | |
| .rtl | Text file | |
| .rtp | Rtpatch software update package data file | |
| .rts | Runtime library file (CA-Realizer) | |
| .rvw | Review | |
| .rws | Resource Workshop data file (Borland C++) | |
| .rwx | Script (RenderWare) | |
| .s | Assembly source code file (unix) | |
| .s | Scheme source code file | |
| .s_b | Parasolid data schema, binary format | |
| .s_t | Parasolid data schema, text format | |
| .s$$ | Temporary sort file (Sprint) | |
| .s3m | Music (16 channels) (Scream Tracker 3.0) | |
| .sal | Datafile (SORITEC) | |
| .sam | Text file (Samna - Lotus Ami/Ami Pro) | |
| .sar | Compressed file archive created by SAR (sar1.zip) | |
| .sav | Backup file (saved file) | |
| .sav | Configuration | |
| .sav | Saved game situation (eg. NetHack) | |
| .sb | Audio file (signed byte) | |
| .sbd | Storyboard (Storyboard Editor) | |
| .sbi | Sound Blaster Instrument file (Creative Labs) | |
| .sbp | Dml program (Superbase 4) | |
| .sbr | Support file (Source Browser) | |
| .sbt | Notes related to record (Suberbase 4 Windows) | |
| .sc | Pal script (Paradox) | |
| .sc | Display driver (Framework II) | |
| .sc3 | Renamed dBASE III screen mask file (dBASE IV) | |
| .sc3 | Screen device driver (Harvard Graphics 3.0) | |
| .sca | Datafile (SCA) | |
| .scc | Text file | |
| .scd | Scodl Scan Conversion Object Description Language graphics | |
| .scf | Multimedia show (ScoreMaker) | |
| .scf | Spelling checker configuration (Symphony) | |
| .sch | Project schedule (Schedule Publisher) | |
| .sch | Schematics file (ORCAD) | |
| .sch_bin | Parasolid data schema, binary format | |
| .sch_txt | Parasolid data schema, text format | |
| .sci | System Configuration Information | |
| .sci | Fax (SciFax) | |
| .scm | Scheme source code file | |
| .scn | Screen file (Kermit) | |
| .sco | High score | |
| .scp | Script (BITCOM) | |
| .scr | Debug source code file (DOS Debug) | |
| .scr | Screen - screen snapshot (dBASE IV - Procomm Plus) | |
| .scr | Screen font (LocoScript) | |
| .scr | Screen saver (Windows 3.x) | |
| .scr | Script (Kermit - 1st Reader) | |
| .sct | Screen memo (FoxPro) | |
| .scx | Bitmap graphics (ColorRIX) | |
| .scx | Chart (Stanford Chart) | |
| .scx | Screen (FoxPro) | |
| .scy | Security file (ReaGeniX) | |
| .sda | Fidonet's Software Distribution Network file archive description | |
| .sdf | System Data Format file (fixed lenght ASCII text) | |
| .sdi | Software Distribution Network Info file | |
| .sdn | Software Distribution Network compressd file archive (pak251.exe) | |
| .sdw | StarWriter Document (StarOffice) | |
| .sea | Self-Extracting compressed Macintosh file Archive | |
| .sec | Secret key ring file (Pretty Good Privacy RSA System) | |
| .sec | Secured animation file (Disney Animation Studio) | |
| .seg | Segment (Stuffit or Compact Pro) | |
| .sep | Printer separator page | |
| .seq | Atari animation file | |
| .seq | Sequential Instruction File (Bubble Chamber) | |
| .ses | Session info (Clarion Modula-2) | |
| .set | Configuration (1st Reader) | |
| .set | Driver sets created by Install (Symphony) | |
| .set | Setup options file | |
| .sf | Ircam Sound File (CSound package - MixView sound sample editor) | |
| .sf | Wps attribute storage (OS/2 WorkPlace Shell) wp_root.sf | |
| .sf2 | SFBank_2 SoundFont Viewer | |
| .sfi | Graphics (SIS Framegrabber) | |
| .sfi | Printer font (HP LaserJet landscape) (Ventura Publisher) | |
| .sfl | Pcl 4 bitmap font (landscape) (Intellifont) (Ventura Publisher) | |
| .sfn | Font (SPX) | |
| .sfp | Pcl 4 bitmap font (portrait) (Intellifont) (Ventura Publisher) | |
| .sfs | Pcl 5 scalable font file (Intellifont) | |
| .sft | Screen font (ChiWriter) | |
| .sg | "Graphics (ABC Snap Graphics) user files""" | |
| .sg1 | Graphics (Stanford Graphics) | |
| .sgf | Document with graphics (Starwriter) | |
| .sgi | Graphics (IRIS - Silicon Graphics) | |
| .sgp | Statistics (STATGRAPHICS Plus) | |
| .sgt | Save/get keyboard macro (Signature) | |
| .sh | Unix shell script | |
| .sh | Unix ASCII file archive created by SHAR (unshar.zip) | |
| .sh3 | Presentation (Harvard Graphics 3.0) | |
| .shar | "UNIX shell archive decoded by Unshar" | |
| .shb | Background (CorelShow) | |
| .shg | Segmented-graphics bitmap | |
| .shk | Compressed Apple II file archive created by SHRINKIT | |
| .shm | Shell macro (WordPerfect Library) | |
| .shp | Shape file and source file for text fonts (AutoCAD) | |
| .shr | Unix ASCII file archive created by SHAR (unshar.zip) | |
| .shw | Presentation (Harvard Graphics 2.0 - CorelShow) | |
| .shw | Slide show (WordPerfect Presentations) | |
| .shx | Shape entities (AutoCAD) | |
| .si | SoftImage image file | |
| .sif | Setup Installation Files info (Windows NT Setup) | |
| .sig | Current program settings (Signature) | |
| .sig | Signature file (PopMail) | |
| .sik | Backup file (Sicherungskopie) (MS Word) | |
| .sit | Compressed Macintosh archive created by STUFFIT (unsit30.zip) | |
| .sl | S-Lang source code file | |
| .slb | Slide library (AutoCAD) | |
| .slc | Compiled SALT script (Telix) | |
| .sld | Slide (AutoCAD) | |
| .sli | Slide (MAGICorp Slide Service) | |
| .slk | Sylk Symbolic Link format data file (MultiPlan) | |
| .sll | Sound data file | |
| .slt | Salt Script Application Language for Telix script source (Telix) | |
| .sm | Smalltalk source code file | |
| .sm | Maillist (SoftSpoken Mailer) | |
| .sm | Script (ScriptMaker) | |
| .sm | Text file (Samna Word) | |
| .smf | Fax (SMARTFAX) | |
| .smm | Macro (Ami Pro) | |
| .smp | Sample (sound file) | |
| .smt | Text file (Smart Ware II) | |
| .snd | Digitized sound file (Macintosh/ATARI/PC) | |
| .sng | Song (midi sound) (Midisoft Studio - Prism) | |
| .sno | Snobol4 source code file | |
| .snp | Output video format from Computer Eyes equipment | |
| .sol | Solution eg. game walkthroughs | |
| .som | Network serial numbers (Quattro Pro) | |
| .som | Sort information (Paradox) | |
| .son | Song (SBStudio II) | |
| .sou | Sound data (sound tool) | |
| .sp | Compressed file archive created by SPLINT (unix) | |
| .spc | Program (MS Multiplan) | |
| .spc | Temporary file (WordPerfect for Win) | |
| .spd | Scalable font (Speedo) (Harvard Graphics 3.0) | |
| .spf | Slide presentation file (EnerGraphics) | |
| .spg | Glossary (Sprint) | |
| .spi | Graphics (Siemens and Philips scanner) | |
| .spl | Compressed file archive created by SPLINT (splint.arc) | |
| .spl | Customized printer driver (Sprint) | |
| .spl | Personal spell dictionary (Signature) | |
| .spl | Print spooling file (Windows 3.x) | |
| .spl | Sample | |
| .spm | Data (WordPerfect) wp{wp}.spm | |
| .spp | Printer file (Sprint) | |
| .spr | Document letter (Sprint) | |
| .spr | Genarated screen program (FoxPro) | |
| .spr | Sprite | |
| .sps | Spssx source code file (VAX/VMS) | |
| .sps | Screen driver (Sprint) | |
| .spt | Spitbol source code file | |
| .spt | Support file (MITAC disk/system management utility pack) | |
| .spw | Worksheet (SigmaPlot) | |
| .spx | Compiled screen program (FoxPro) | |
| .sql | SQL report or query | |
| .sqz | Compressed file archive created by SQUEEZE (sqz1083e.exe) | |
| .src | Source (DataFlex) | |
| .srf | Sun Raster File graphics | |
| .srp | Script (QuickLink) | |
| .ss | Bitmap graphics (Splash) | |
| .ssd | Datafile (SAS/PC) | |
| .ssp | Datafile (SAS Transport) | |
| .st | Smalltalk source code file (Little Smalltalk) | |
| .st | Instrument library (Scream Tracker) | |
| .st | Stamp (NeoPaint) | |
| .sta | Saved state (Reflection 4.0) | |
| .sta | Stack (Spinmaker Plus) | |
| .stb | Stub library (Genus GX Kernel) | |
| .std | State Transition Diagram graphic file (Prosa) | |
| .std | Standard (something..) (LocoScript) | |
| .stf | Compressed file archive created by SHRINKTOFIT | |
| .stm | State Transition Diagram model file (Prosa) | |
| .stm | Music (Scream Tracker) | |
| .sto | Pascal stub OBJ file (Genus GX Kernel) | |
| .str | Structure list object file (dBASE Application Generator) | |
| .sts | Project status info (MS C/C++) | |
| .sts | Song format (Scream Tracker) | |
| .stw | Data file (SmartTerm for Windows) | |
| .stx | Electronic book (SmarText) | |
| .stx | Tax form (CA-Simply Tax) | |
| .sty | Style library or sheet (many text and graphics programs) | |
| .sui | Suit library (Simple User Interface Toolkit) | |
| .sum | Summary | |
| .sun | Sun rasterfile graphics | |
| .sup | Supplementary dictionary (WordPerfect for Win) | |
| .svd | Autosave file for document (MS Word) | |
| .svg | Autosave file for glossary (MS Word) | |
| .svs | Autosave file for style sheet (MS Word) | |
| .sw | Audio file (signed word) | |
| .swg | Swag packet (SWAG Reader) | |
| .swp | Document backup (Sprint) | |
| .swp | Swap file (DOS) | |
| .sy1 | Smartpix symbol library (Ami Pro) | |
| .sy3 | Symbol file (Harvard Graphics 3.0) | |
| .syd | Backup of startup files created by QEMM (?) autoexec.syd | |
| .syl | SYLK spreadsheet format | |
| .sym | Precompiled headers (Borland C++) | |
| .sym | Program symbol table (many compilers and linkers) | |
| .sym | Symbol file (Harvard Graphics 2.0) | |
| .syn | Sdsc Synu image file (SDSC Image Tool) | |
| .syn | Synonym file (MS Word 5) | |
| .sys | Datafile (SYGRAPH - SYSTAT - SPSS/PC) | |
| .sys | System file - device driver or hardware configuration info (DOS) | |
| .syw | Graphics symbols (Harvard Graphics Win) | |
| .t | Tads source | |
| .t | Tape Archive (tar) without compression | |
| .t | Tester symbol table (ReaGeniX code generator) | |
| .t44 | Temporary file for Sort or Index (dBASE IV) | |
| .t64 | Program (C64S emulator) | |
| .tag | Query tag name (DataFlex) | |
| .tah | Turbo Assembler Help file (Borland C++) | |
| .tal | Text illustration (TypeAlign) | |
| .tar | Compressed file archive created by TAR (pax2exe.zoo) | |
| .taz | Compressed ASCII file archive created by TAR and COMPRESS (.tar.Z) | |
| .tb1 | Font file (Borland Turbo C) | |
| .tb2 | Font file (Borland Turbo C) | |
| .tbf | Fax (Imavox TurboFax) | |
| .tbk | Memo backup (dBASE IV - FoxPro) | |
| .tbk | Toolbook (Asymetrix ToolBook) | |
| .tbl | Graphics (native format) (PageMaker TableEditor) | |
| .tbl | Table of values (OS/2) | |
| .tbs | Text elements ?? (Textbausteine) (MS Word) | |
| .tbx | Table (Project Scheduler 4) | |
| .tc | Configuration (Turbo C - Borland C++) | |
| .tch | Turbo C Help file (Borland C++) | |
| .tcl | Tool Command Language source code (Swat) | |
| .tcw | Drawing (TurboCAD for Windows) | |
| .td | Configuration file (Turbo Debugger for DOS) | |
| .td0 | Disk image file (Teledisk) | |
| .td2 | Configuration file (Turbo Debugger for Win32) | |
| .tdb | Database (TACT) | |
| .tdf | Font (TheDraw) | |
| .tdf | Typeface definition file (Speedo) | |
| .tdh | Help file (Turbo Debugger) | |
| .tdk | Keystroke recording file (Turbo Debugger) | |
| .tds | Symbol table (Turbo Debugger) | |
| .tdw | Configuration file (Turbo Debugger for Windows) | |
| .tef | Fax (Relisys TEFAX) | |
| .tel | Host file (Telnet) | |
| .tem | Turbo Editor Macro Language script (Borland C++) | |
| .tem | Input template (IconAuthor) | |
| .tex | Tex text file (Scientific Word) | |
| .tex | Datasheet (Idealist) | |
| .tf | Configuration (Turbo Profiler) | |
| .tfa | Area file (Turbo Profiler) | |
| .tfc | Catalogue file (Tobi's Floppy Cataloguer) | |
| .tfh | Help file (Turbo Profiler) | |
| .tfm | Tex Font Metric file (TeX) | |
| .tfm | Tagged font metric file (Intellifont) | |
| .tfs | Statistics (Turbo Profiler) | |
| .tg1 | Project file (On Target) | |
| .tga | Truevision Targa bitmap graphics | |
| .tgz | Compressed file archive created by TAR and GNUzip (.tar.gz) | |
| .ths | Thesaurus dictionary (WordPerfect for Win) | |
| .tif | Tagged Image File Format bitmap graphics (PageMaker - CorelDRAW) | |
| .til | Fuzzy logic knowledge base (Togai InfraLogic Fuzzy-C Compiler) | |
| .tis | Tile set (MahJongg 3.0) | |
| .tjl | Backup file (VAXTPU editor) | |
| .tlb | Reference table (Bubble Chamber) | |
| .tlb | Text library (VAX) | |
| .tlb | Type library (Visual C++) | |
| .tlc | Compiled Tool Command Language source code (Swat) | |
| .tlp | Project (TimeLine) | |
| .tmf | Tagged Font Metric file (WordPerfect for Win) | |
| .tmo | Ztg global optimizer default output file (Zortech C++) | |
| .tmp | Temporary file | |
| .tms | Script (Telemate) | |
| .toc | Table Of Contents | |
| .tos | Self-extracting file archive (Atari ST) | |
| .tp | Configuration (Turbo Pascal) | |
| .tp | Session-state file (Turbo Profiler) | |
| .tp3 | Template (Harvard Graphics 3.0) | |
| .tpb | Downloadable PCL Soft font file backup (HiJaak) | |
| .tpf | Downloadable PCL Soft font file (HiJaak) | |
| .tph | Help file (Turbo Pascal) | |
| .tpl | Resident units library (Turbo Pascal) | |
| .tpl | Template (Harvard Graphics 2.0) | |
| .tpp | Protected Mode Units (Borland Pascal 7.0) | |
| .tps | Clarion for Windows data base files | |
| .tpu | Turbo Pascal Unit (BGI) (Turbo Pascal) | |
| .tpu | Command file (VAXTPU editor) | |
| .tpw | Session-state file (Turbo Profiler for Windows) | |
| .tpw | Turbo Pascal Unit (BGI) (Turbo Pascal for Windows) | |
| .tpz | Compressed file archive created by TAR and GNUzip (.tar.gz) | |
| .tr | Session-state settings (Turbo Debugger for DOS) | |
| .tr | Man page input suitable for troff -man (cawf2.zip) | |
| .tr2 | Session-state settings (Turbo Debugger for Win32) | |
| .trc | Debug support file (Power CTrace) | |
| .tre | Directory tree file (PC-Tools) | |
| .trm | Terminal settings (Windows 3.x) | |
| .trn | Translation support file (Quattro) | |
| .trs | Executable file (Micrografx) | |
| .trw | Session-state settings (Turbo Debugger for Windows) | |
| .tst | Printer test file (WordPerfect for Win) | |
| .ttf | Truetype Font file | |
| .tud | Graphics (Thumbs Plus Viewer) | |
| .tuo | Graphics (Thumbs Plus Viewer) | |
| .tut | Tutorial | |
| .tux | Graphics (Thumbs Plus Viewer) | |
| .tv | Table view settings (Paradox) | |
| .tv1 | Overflow file above insert point in Doc 1 (WordPerfect for Win) | |
| .tv2 | Overflow file above insert point in Doc 2 (WordPerfect for Win) | |
| .tv3 | Overflow file above insert point in Doc 3 (WordPerfect for Win) | |
| .tv4 | Overflow file above insert point in Doc 4 (WordPerfect for Win) | |
| .tv5 | Overflow file above insert point in Doc 5 (WordPerfect for Win) | |
| .tv6 | Overflow file above insert point in Doc 6 (WordPerfect for Win) | |
| .tv7 | Overflow file above insert point in Doc 7 (WordPerfect for Win) | |
| .tv8 | Overflow file above insert point in Doc 8 (WordPerfect for Win) | |
| .tv9 | Overflow file above insert point in Doc 9 (WordPerfect for Win) | |
| .tvf | Table view settings (dBASE) | |
| .txf | Compressed file archive created by TAR and FREEZE (.tar.f) | |
| .txi | Support file (TeX) | |
| .txt | Text file | |
| .tym | Time Stamp (PageMaker 4) | |
| .tz | Compressed file archive created by TAR and COMPRESS (.tar.Z) | |
| .tzb | Compressed file archive created by TAR - COMPRESS - BTOA (.tar.Z.btoa) | |
| .ub | Audio file (unsigned byte) | |
| .uc2 | Compressed file archive created by UltraCompressor II (uc2.zip) | |
| .ucn | New compressed file archive created by UltraCompressor II | |
| .udf | Filter (Photostyler) | |
| .ue2 | Encrypted file archive created by UltraCompressor II | |
| .uhs | Universal Hint System (binary file) | |
| .ui | Espire source code file (Geoworks UI Compiler) | |
| .ui | User interface (Sprint) | |
| .uif | Long prompts for windows (WordPerfect for Win) | |
| .uih | Espire header file (Geoworks UI Compiler) | |
| .ul | Ulaw audio file | |
| .uld | Information about uploaded files (Procomm Plus) | |
| .ult | Music (UltraTracker) | |
| .umb | Backup file (MemMaker) | |
| .uni | Unimod music module (MIKMOD) | |
| .uni | Datafile (Forecast Pro) | |
| .unx | Text file containing UNIX specific info | |
| .upd | Program update info | |
| .upd | Update data (dBASE) | |
| .upo | Compiled update data (dBASE) | |
| .usp | Printer font with USASCII extended character set (PageMaker) | |
| .usr | User database file (Procomm Plus - Turbo C++ tour) | |
| .uu | Compressed ASCII file archive created by UUDE/ENCODE | |
| .uue | Compressed ASCII file archive created by UUENCODE (uuexe515.exe) | |
| .uw | Audio file (unsigned word) | |
| .v | Consistency check support file (ReaGeniX code generator) | |
| .v | Main input file for an image (Vivid 2.0) | |
| .val | Validity checks and referential integrity (Paradox for Windows) | |
| .val | Values list object file (dBASE Application Generator) | |
| .van | Animation (VistaPro) | |
| .var | Variable file (IconAuthor) | |
| .vbx | Visual Basic eXtension (Visual Basic) | |
| .vbs | VB Script script file | |
| .vc | Include file with color definitions (Vivid 2.0) | |
| .vc | Spreatsheet (VisiCalc) | |
| .vcw | Visual workbench information (MS Visual C++) | |
| .vcx | Spreatsheet (VisiCalc Advanced) | |
| .vda | Bitmap graphics | |
| .vdr | Drawing (ComputerEasy Draw) | |
| .vew | "View file (Clipper 5 Lotus Approach)" | |
| .vfm | Voting Form (Voter) | |
| .vfn | Voting Form for Customers (Voter) | |
| .vga | Vga display driver | |
| .vga | Vga display font | |
| .vgd | Vga display driver (Generic CADD) | |
| .vgr | Graphics (Ventura Publisher) | |
| .vi | Graphics (Jovian Logic VI) | |
| .vic | Vicar graphics | |
| .vid | Ms-DOS Shell Monitor file (MS-DOS 5) | |
| .vid | Bitmap graphics (YUV12C M-Motion Frame Buffer) | |
| .vid | Screen device driver (Word) | |
| .vif | Khoros Visualization image file (SDSC Image Tool) | |
| .vik | Viking graphics | |
| .vis | Vis graphics | |
| .vm | Virtual Memory file (Geoworks) | |
| .vmc | Virtual memory configuration (Acrobat reader) | |
| .vmf | Font characteristics (Ventura Publisher) | |
| .vms | Text file containing VMS specific info | |
| .vo | Include file with object definition (Vivid 2.0) | |
| .voc | Digitized samples (Creative Voice file) | |
| .vof | Object folder (VZ Programmer) | |
| .vpg | Graphics (VPGraphics) | |
| .vrm | Overlay file (QuattroPro) | |
| .vrp | Project (WATCOM VX·Rexx) | |
| .vrs | Video Resource eg. video device driver (WordPerfect) | |
| .vs | Include file with surface definition (Vivid 2.0) | |
| .vsd | Diagram (Shapeware Visio) | |
| .vsm | Simulation model (VisSim) | |
| .vsp | Sprite (SPX) | |
| .vss | Smartshapes file (Shapeware Visio) | |
| .vst | Truevision Vista bitmap graphics | |
| .vue | Animation (3D Studio) | |
| .vue | View (dBASE IV - FoxPro) | |
| .vw | Text file (Volkswriter) | |
| .vwr | File viewer file (PC Tools) | |
| .vxd | Virtual device driver (MS Windows) | |
| .w | Word chart file (APPLAUSE) | |
| .w30 | Printer font (AST TurboLaser) (Ventura Publisher) | |
| .w31 | Startup file (Windows 3.1) | |
| .w44 | Temporary file for Sort or Index (dBASE) | |
| .wav | Waveform audio file (RIFF WAVE format) | |
| .wb | "Data file (Freeware Dictionary Project) word databases" | |
| .wb1 | Notebook (Quattro Pro) | |
| .wb2 | Spreadsheet (Quattro Pro) | |
| .wbf | Ms Windows Batch File (Catch) | |
| .wbk | Document/workbook (WordPerfect for Win) | |
| .wbt | Batch file (WinBatch) | |
| .wcd | Macro token list (WordPerfect for Win) | |
| .wcm | Data transmission file (MS Works) | |
| .wcm | Macro (WordPerfect for Win) | |
| .wcp | Product information description (WordPerfect for Win) | |
| .wdb | Database (MS Works) | |
| .web | Web source code file | |
| .wfm | Form object (dBASE Form Designer) | |
| .wfn | Font (CorelDRAW) | |
| .wfx | Data file (Winfax) | |
| .wg1 | Worksheet (Lotus 1-2-3/G) | |
| .wg2 | Worksheet (Lotus 1-2-3 for OS/2) | |
| .wid | Width table (Ventura Publisher) | |
| .win | Window file (FoxPro - dBASE) | |
| .wiz | Page wizard (MS Publisher) | |
| .wk1 | Spreadsheet (Lotus 1-2-3 version 2.x - Symphony 1.1+) | |
| .wk3 | Spreadsheet (Lotus 1-2-3 version 3.x) | |
| .wk4 | Spreadsheet (Lotus 1-2-3 version 3.4) | |
| .wkb | Document (WordPerfect for Win) | |
| .wke | Spreatsheet (Lotus 1-2-3 educational version) | |
| .wkq | Spreatsheet (Quattro) | |
| .wks | Spreadsheet (Lotus 1-2-3 version 1A - Symphony 1.0 - MS Works) | |
| .wks | Workspace (Xlisp) | |
| .wlk | Graphics (Virtus Walkthrough) | |
| .wmc | Backup of startup files by Windows MathCad autoexec.wmc | |
| .wmc | Macro file (WordPerfect for Win) | |
| .wmc | Text file (WordMARC) | |
| .wmf | Windows MetaFile vector graphics | |
| .wn | Text (NeXT WriteNow) | |
| .wnf | Outline font description (CorelDRAW native format) | |
| .woa | Swap file (Windows 3.x) | |
| .woc | Organization (Windows OrgChart) | |
| .wow | Music (8 channels) (Grave Mod Player) | |
| .wp | Text file (WordPerfect 4.2) | |
| .wp5 | Document (WordPerfect 5.x) | |
| .wpd | Document (WordPerfect 6.0 - PFS:WindowWorks) | |
| .wpf | Fax (WorldPort) | |
| .wpf | Form (WordPerfect) | |
| .wpg | Wordperfect Graphics vector graphics (DrawPerfect) | |
| .wpk | Macros (WordPerfect for Win) | |
| .wpm | Macros (WordPerfect) | |
| .wps | Text document (MS Works) | |
| .wq! | Compressed spreadsheet (Quattro Pro) | |
| .wq1 | Spreadsheet (Quattro Pro) | |
| .wq2 | Quattro Pro v 5 Spreadsheet | |
| .wr1 | Spreatsheet (Symphony 1.1 - 1.2 - 2) | |
| .wrd | Template (Charisma) | |
| .wri | Text file (Windows Write) | |
| .wrk | Spreatsheet (Symphony 1.0) | |
| .wrp | Compressed Amiga file archive created by WARP | |
| .wrs | Windows Resource eg. printer driver (WordPerfect for Win) | |
| .ws | Text file (WordStar 5.0-6.0) | |
| .ws2 | Text file (WordStar 2000) | |
| .wsd | Document (WordStar) | |
| .wsp | Workspace (Fortran PowerStation) | |
| .wst | Text file (WordStar) | |
| .wwb | Button bar for document window (WordPerfect for Win) | |
| .wwk | Keyboard layout (WordPerfect for Win) | |
| .wxp | Document (EXP for Windows) | |
| .x | Avs X image file (SDSC Image Tool) | |
| .x | Lex source code file | |
| .x_b | Parasolid model transmit file, binary format | |
| .x_t | Parasolid model transmit file, text format | |
| .x01 | Secondary index (Paradox) | |
| .x02 | Secondary index (Paradox) | |
| .x03 | Secondary index (Paradox) | |
| .x04 | Secondary index (Paradox) | |
| .x05 | Secondary index (Paradox) | |
| .x06 | Secondary index (Paradox) | |
| .x07 | Secondary index (Paradox) | |
| .x08 | Secondary index (Paradox) | |
| .x09 | Secondary index (Paradox) | |
| .xbm | X11 Bitmap graphics | |
| .xfn | Printer font (Xerox 4045) (Ventura Publisher) | |
| .xft | 24 pin printer font (ChiWriter) | |
| .xla | Xlib Archive (xlibpas2.zip) | |
| .xla | Add-in macro sheet (MS Excel) | |
| .xlb | Data (MS Excel) | |
| .xlc | Chart document (MS Excel) | |
| .xll | Excel Dynamic Link Library (MS Excel) | |
| .xlm | Macro sheet (MS Excel) | |
| .xls | Worksheet (MS Excel) | |
| .xlt | Template (MS Excel) | |
| .xlt | Translation table (Lotus 1-2-3 - Symphony - Procomm Plus) | |
| .xlw | Workbook (MS Excel) | |
| .xm | Music (Fast Tracker) | |
| .xmi | Compressed eXtended MIdi music | |
| .xmt_bin | Parasolid model transmit file, binary format | |
| .xmt_txt | Parasolid model transmit file, text format | |
| .xnf | Standard Network File form | |
| .xpm | X11 Pixel Map graphics | |
| .xqt | Executable file (Waffle) | |
| .xqt | Macro sheet (SuperCalc) | |
| .xrf | Cross-reference file | |
| .xtb | External translation table (LocoScript) | |
| .xwd | X Window System window dump image graphics (SDSC Image Tool) | |
| .xwk | Keyboard mapping (Crosstalk) | |
| .xwp | Session (Crosstalk) | |
| .xwp | Text file (Xerox Writer) | |
| .xx | Compressed file ASCII archive created by XXENCODE (uuexe515.exe) | |
| .xxe | Compressed file ASCII archive created by XXENCODE (uuexe515.exe) | |
| .xy | Text file (XY Write) | |
| .xy3 | Text file (XYWrite III) | |
| .xyw | Text file (XyWrite III) | |
| .y | Yacc grammar file | |
| .y | Compressed Amiga file archive created by YABBA | |
| .y01 | Secondary index (Paradox) | |
| .y02 | Secondary index (Paradox) | |
| .y03 | Secondary index (Paradox) | |
| .y04 | Secondary index (Paradox) | |
| .y05 | Secondary index (Paradox) | |
| .y06 | Secondary index (Paradox) | |
| .y07 | Secondary index (Paradox) | |
| .y08 | Secondary index (Paradox) | |
| .y09 | Secondary index (Paradox) | |
| .yal | Data (Arts & Letters) | |
| .yuv | Yuv graphics | |
| .yz | Compressed file archive created by YAC | |
| .z | Compressed file ASCII archive created by COMPRESS (comp430d.zip) | |
| .z | Compressed file archive created by PACK (Unix SysV pack) | |
| .z3 | Infocom game module | |
| .zdb | Data file (Wonder Word) | |
| .zdg | Compressed ZiffNet text document (Zview) | |
| .zer | Data file (Zerberus) | |
| .zgm | Graphics (Zenographics) | |
| .zip | Compressed file archive created by PKZIP (pkz204g.exe) | |
| .zom | Compressed Amiga file archive created by ZOOM | |
| .zoo | Compressed file archive created by ZOO (zoo210.exe) | |
| .zvd | Zyxel Voicefile (Z-Fax) |