| .$$$ | Temporary file |
| .1st | ASCII text file (e.g. READ.1ST) |
| .3ds | 3D Studio File |
| .3fx | CorelChart Effect |
| .3gr | Windows Video Grabber Data file |
| .8m | PageMaker Printer font with Math 8 extended character set |
| .8u | PageMaker Printer font with Roman 8 extended character set |
| .abf | Adobe Binary Font |
| .abk | CorelDRAW Automatic backup file |
| .abm | photo album |
| .abs | MPEG audio sound file |
| .aca | Microsoft Agent Character File |
| .ace | Ace Archiver compressed file |
| .acf | Microsoft Agent Character File |
| .ad | AfterDark Screen saver |
| .adi | AutoCAD Graphics |
| .adn | Lotus 1-2-3 Add-in |
| .adx | Archetype Designer Document |
| .afi | Truevision bitmap graphics |
| .afm | ATM - many Type 1 font metric ASCII data for font installer |
| .ai | Adobe Illustrator Vector graphics |
| .all | WordPerfect for Win General printer information |
| .alt | WordPerfect Library Menu file |
| .ans | Ansi graphics; character animation |
| .aps | MS Visual C++ file |
| .arc | Compressed file archive |
| .arf | Automatic Response File |
| .arj | Compressed file archive created by ARJ |
| .asc | Ascii text file |
| .ascx | Microsoft ASP.NET user control file |
| .asd | Lotus 1-2-3 Screen driver |
| .asd | Word for Windows Autosave file |
| .asf | Lotus 1-2-3 Screen font |
| .asm | Assembly source code file |
| .asmx | Microsoft .NET Web Service file |
| .asp | Microsoft Active Server Page |
| .aspx | Microsoft ASP.NET file |
| .asx | Microsoft Windows Media Active Stream Redirector file |
| .asx | Windows Media Streaming video shortcut |
| .at2 | Aldus Persuasion 2.0 Auto template |
| .atm | Adobe Type Manager data/ info |
| .au | Audio file used on older web pages |
| .avi | Video for Windows Audio Video Interleaved movie clip |
| .awm | Animation Works Movie |
| .b3d | 3D Builder file |
| .bak | Backup file (generic) |
| .bas | Basic source code file |
| .bat | DOS Batch file |
| .bco | Bitstream Outline font description |
| .bdr | MS Publisher Border |
| .bez | Bitstream Outline font description |
| .bga | Bitmap graphics |
| .bib | Bibliography (ASCII) |
| .bin | Binary file |
| .bit | Bitmap X11 |
| .bk! | WordPerfect for Win Document backup |
| .bkf | Microsoft Backup File |
| .bkw | FontEdit Mirror image of font set |
| .blk | WordPerfect for Win Temporary file |
| .bm | Bitmap graphics |
| .bmf | Corel Image file |
| .bmp | Windows Bitmap |
| .bpt | CorelDRAW Bitmap fills file |
| .bsc | MS Fortran Pwbrmake object file |
| .bup | Backup file (generic) |
| .c | C source code file |
| .c++ | C++ source code file |
| .cab | Microsoft installation archive Cabinet File |
| .cas | Comma-delimited ASCII File |
| .cc | C++ source code file |
| .ccb | Visual Basic Animated Button Configuration |
| .cch | CorelChart Chart |
| .ccx | Corel PrintHouse file |
| .cdr | CorelDRAW native format Vector graphics |
| .cdt | CorelDraw 4.0 Data |
| .cel | Autodesk Animator - Lumena Graphics |
| .cfg | Configuration file |
| .cfl | CorelFLOW Chart |
| .cgi | Common Gateway Interface script |
| .cgm | Computer Graphics Metafile vector graphics |
| .chd | FontChameleon Font descriptor |
| .chk | ChkDsk Recovered data |
| .chk | WordPerfect for Win Temporary file |
| .cif | Caltech Intermediate Format graphics |
| .cif | Easy CD Creator CD Image File |
| .clp | Quattro Pro Clip art graphics |
| .cls | C++ class definition file |
| .cmf | Creative Music File FM-music file |
| .cmp | CorelDRAW Header file for PostScript printer files |
| .cmp | MS Word for DOS User dictionary |
| .cmv | CorelMove CorelDraw 4.0 Animation |
| .cnt | Helpfile contents |
| .cnv | Word for Windows Data conversion support file |
| .cnv | WordPerfect for Win Temporary file |
| .col | Autodesk Animator - many Color palette |
| .col | MS Multiplan Spreadsheet |
| .cph | Corel Print House image |
| .cpi | Colorlab Processed Image bitmap graphics |
| .cpi | DOS Code Page Information file |
| .cpp | C++ source code file |
| .cps | Colored postscript files |
| .cpx | Corel Presentation Exchange Compressed Drawing |
| .crf | MS MASM - Zortech C++ Cross-reference |
| .crs | WordPerfect 5.1 File Conversion Resource |
| .csv | Comma Separated Values text file format (ASCII) |
| .ctx | Microsoft online guides Course TeXt file |
| .ctx | Pretty Good Privacy RSA System Ciphertext file |
| .cvp | WinFax Cover page |
| .cvs | Canvas Graphics |
| .dat | Data file (generic) |
| .dbg | MS C/C++ Symbolic debugging information |
| .dcr | Shockwave file |
| .dcs | CYMK format Bitmap graphics |
| .ddb | Bitmap graphics |
| .dev | Device driver (old) |
| .dfv | Word Printing form |
| .dib | Device-Independent Bitmap Bitmap graphics |
| .dic | Lotus Notes / Domino dictionary file |
| .dip | Graphics |
| .dis | CorelDraw Thesaurus |
| .diz | Description In Zip Description file |
| .dld | Lotus 1-2-3 Data |
| .dlg | MS Windows SDK Dialog resource script file |
| .dll | CorelDRAW Export/import filter |
| .doc | Microsoft Word Document |
| .dot | CorelDRAW Line-type definition file |
| .dot | Word for Windows Template |
| .drs | WordPerfect for Win Display Resource |
| .drv | Device driver (old) |
| .dsr | WordPerfect for Win Driver Resource |
| .dvc | Lotus 1-2-3 Data |
| .dvp | AutoCAD Device parameter file |
| .dwg | AutoCAD Drawing database |
| .dxf | AutoCAD Drawing Interchange File Format vector graphics |
| .dyn | Lotus 1-2-3 Data |
| .eeb | WordPerfect for Win Button bar for Equation Editor |
| .emf | Enhanced Metafile graphics |
| .eml | MS Outlook Express Electronic Mail |
| .end | CorelDRAW Arrow-head definition file |
| .env | WOPR Enveloper macro |
| .env | WordPerfect for Win Environment file |
| .eps | Adobe Illustrator Encapsulated PostScript vector graphics |
| .eqn | WordPerfect for Win Equation |
| .evt | Event log |
| .evy | WordPerfect Envoy Document |
| .exe | Executable program |
| .f77 | Fortran 77 source code file |
| .faq | Frequently Asked Questions text file |
| .fax | Incoming Fax |
| .fd | MS Fortran Declaration file |
| .feb | WordPerfect for Win Button bar for Figure Editor |
| .ff | Agfa Compugraphics Outline font description |
| .ffl | Microsoft Fast Find File |
| .ffo | Microsoft Fast Find File |
| .ffx | Microsoft Fast Find File |
| .fh3 | Aldus FreeHand 3.x Vector graphics |
| .fh4 | Aldus FreeHand 4.x Vector graphics |
| .fi | MS Fortran Interface file |
| .fif | Fractal Image Format file |
| .fil | WordPerfect Overlay |
| .flc | Autodesk Animator Animation |
| .fli | Autodesk Animator Animation |
| .flm | AutoCAD/AutoShade Film Roll |
| .fm | FrameMaker Document |
| .fm1 | Lotus 1-2-3 release 2.x Spreadsheet |
| .fm3 | Lotus 1-2-3 release 3.x Spreadsheet |
| .fmb | WordPerfect for Win File Manager Button bar |
| .fnt | Font file |
| .fon | Windows 3.x font library Font file |
| .fot | Windows Font Installer Installed Truetype font |
| .frf | FontMonger Font |
| .frm | Visual Basic Form |
| .frs | WordPerfect for Win Screen Font Resource |
| .fsx | Lotus 1-2-3 Data |
| .fts | Windows Help Full-Text Search Index file |
| .fxs | WinFax Fax Transmit Format graphics |
| .gcd | Graphics |
| .gly | MS Word Glossary |
| .gph | Lotus 1-2-3/G Graph |
| .gwi | Groupwise File |
| .gz | GNU zip Compressed file archive created by GZIP |
| .h | Header file (used with .c source code) |
| .h++ | C++ Header file |
| .hdf | Help Development Kit Help file |
| .hdx | AutoCAD - Zortech C++ Help index |
| .hgl | Hp Graphics Language graphics |
| .hh | C++ header file |
| .hlp | Help information |
| .hpf | PageMaker Hp LaserJet fonts |
| .hpg | AutoCad - Harvard Graphics HPGL plotter file vector graphics |
| .hpj | MS Help Compiler Help project |
| .hqx | Compressed Macintosh file archive created by Binhex |
| .htm | HyperText Markup Language document |
| .html | HyperText Markup Language document |
| .htt | Hypertext template |
| .hwd | Hollywood Presentation |
| .hxx | C++ header file |
| .hyc | WordPerfect Data |
| .hyd | WordPerfect for Win Hyphenation dictionary |
| .icb | Bitmap graphics |
| .icn | Icon source code file |
| .ilk | MS ILink incremental linker Outline of program's format |
| .imp | Lotus Improv Spreadsheet |
| .imz | Compressed floppy image |
| .inc | Include file (programming) |
| .inf | Information text file |
| .inf | Install script / Driver information |
| .ini | Initialization file |
| .ink | CorelDRAW Pantone reference fills file |
| .ins | WordPerfect Data |
| .ion | File description (e.g., descript.ion ) |
| .ipl | CorelDRAW Pantone Spot reference palette file |
| .irs | WordPerfect Resource |
| .isr | MS Streets & Trips Route file |
| .jar | Java archive file |
| .jas | Graphics |
| .jav | Java source code file |
| .jff | JPEG File Interchange Format Bitmap graphics |
| .jpg | JPEG Image File |
| .jsp | Java Server page |
| .jtf | JPEG Tagged Interchange Format Bitmap graphics |
| .kar | Midi file with karaoke word track |
| .key | Keyboard macros |
| .lbm | DeluxePaint Bitmap graphics |
| .lbr | Lotus 1-2-3 Display driver |
| .lcn | WordPerfect Lexicon |
| .ldb | MS Access Data |
| .lex | Lexicon |
| .lha | Compressed file archive created by LHA/LHARC |
| .lib | Library file (programming) |
| .lif | Compressed file archive |
| .lin | AutoCAD Line types |
| .lnk | Windows Shortcut |
| .log | Log file (ASCII) |
| .lrf | MS C/C++ Linker response file |
| .lrs | WordPerfect for Win Language Resource File |
| .lsl | Lotus Script Library |
| .ltm | Lotus Forms Form |
| .lwz | MS Linguistically Enhanced Sound File |
| .lzh | Compressed file archive created by LHA/LHARC |
| .lzs | Compressed file archive created by LARC |
| .lzx | Compressed file archive |
| .mak | Makefile |
| .mak | Visual Basic Project file |
| .man | Command manual |
| .map | Color palette |
| .map | Linker map file |
| .mat | Matlab Data file |
| .mbx | Eudora Mailbox |
| .mda | MS Access Data |
| .mdb | MS Access Database |
| .mdl | 3D Design Plus Model |
| .mdt | MS ILink incremental linker Data table |
| .me | ASCII text file (e.g., READ.ME ) |
| .meb | WordPerfect Library Macro Editor bottom overflow file |
| .med | WordPerfect Library Macro Editor delete save |
| .mem | WordPerfect Library Macro Editor macro |
| .meq | WordPerfect Library Macro Editor print queue file |
| .mer | WordPerfect Library Macro Editor resident area |
| .mes | WordPerfect Library Macro Editor work space file |
| .met | WordPerfect Library Macro Editor top overflow file |
| .mex | WordPerfect Library Macro Editor expound file |
| .mht | MS MHTML Document |
| .mic | Microsoft Image Composer file |
| .mif | FrameMaker Maker Interchange Format |
| .mim | MIME file (used for email attachments) |
| .mk | Makefile |
| .mke | MS Windows SDK Makefile |
| .mmf | MS Mail Mail message file |
| .mnd | AutoCAD Menu Compiler Menu source |
| .mnx | AutoCAD Compiled menu |
| .mny | MS Money Account book |
| .mov | AutoCAD AutoFlix Movie |
| .mp2 | Mpeg audio or video file |
| .mp3 | MPEG Layer 3 Audio file |
| .mpc | MS Project Calender file |
| .mpd | MS Project database file |
| .mpg | Mpeg movie |
| .mpm | WordPerfect Library Mathplan macro |
| .mpp | MS Project Project file |
| .mpv | MS Project View file |
| .mrb | MS C/C++ Multiple Resolution Bitmap graphics |
| .mrs | WordPerfect for Win Macro Resource file |
| .msc | MS C makefile |
| .msi | Windows Installer file |
| .mso | MS FrontPage file |
| .msp | Microsoft Paint Bitmap graphics |
| .mst | MS Windows SDK Setup script |
| .msw | MS Word Text file |
| .mu | Quattro Pro Menu |
| .mvf | AutoCAD AutoFlix Stop frame file |
| .mvi | AutoCAD AutoFlix Movie command file |
| .mxt | MS C Data |
| .nfo | Info file (ASCII) |
| .nlm | Netware Loadable Module |
| .nsf | Lotus Notes / Domino database |
| .nt | Windows NT Startup files |
| .ntf | Lotus Notes / Domino template file |
| .nws | Info text file |
| .nxt | NeXT format Sound |
| .ofm | Adobe font |
| .oft | MS Outlook Item Template |
| .old | Backup file (generic) |
| .org | Lotus Organizer Calendar file |
| .ost | Microsoft Outlook Offline file |
| .out | Output file (ASCII) |
| .p65 | Adobe PageMaker v6.5 |
| .pab | Microsoft Outlook personal address book |
| .pak | Compressed file archive created by PAK |
| .pal | Color palette |
| .pas | Pascal source code file |
| .pat | AutoCAD - Photostyler Hatch patterns |
| .pat | CorelDRAW Vector fill files |
| .pb | WinFax Pro Phonebook |
| .pbi | MS Source Profiler Profiler Binary Input |
| .pbm | Portable Bit Map graphics |
| .pbo | MS Source Profiler Profiler Binary Output |
| .pbt | MS Source Profiler Profiler Binary Table |
| .pcc | PC Paintbrush Cutout picture vector graphics |
| .pcd | Kodak PhotoCD Graphics |
| .pcf | MS Source Profiler Profiler Command File |
| .pch | MS C/C++ Precompiled header |
| .pcl | HP Printer Control Language HP-PCL graphics data |
| .pcx | PC Paintbrush Bitmap graphics |
| .pda | Bitmap graphics |
| .pdd | Adobe PhotoDeluxe Image |
| .pdf | Adobe Portable Document Format |
| .peb | WordPerfect Library Program Editor bottom overflow file |
| .ped | WordPerfect Library Program Editor delete save |
| .pem | WordPerfect Library Program Editor macro |
| .peq | WordPerfect Library Program Editor print queue file |
| .per | WordPerfect Library Program Editor resident area |
| .pes | WordPerfect Library Program Editor work space file |
| .pet | WordPerfect Library Program Editor top overflow file |
| .pfb | Type 1 font file |
| .pfm | Type 1 font metric file |
| .pgm | Portable Grayscale bitMap graphics |
| .pgp | Pretty Good Privacy RSA System Support file |
| .ph | MS C/C++ Phrase-table |
| .ph | Perl header file |
| .pic | PC Paint Bitmap graphics |
| .pka | Compressed file archive created by PKARC |
| .pkg | NeXT Installer script |
| .pl | Perl source code file |
| .pl1 | 3D Home Architect Room plan |
| .pln | WordPerfect for Win Spreadsheet |
| .plt | AutoCAD Hpgl plotter file vector graphics |
| .pm3 | PageMaker 3 Document |
| .pm4 | PageMaker 4 Document |
| .pm5 | PageMaker 5 Document |
| .png | Portable Network Graphics Bitmap |
| .pnm | Graphics file (Portable aNy Map) |
| .pov | Persistence Of Vision Raytraced graphics image |
| .ppb | WordPerfect for Win Button bar for Print Preview |
| .ppd | Acrobat PostScript Printer Description |
| .ppm | Portable Pixel Map graphics |
| .pr2 | Aldus Persuasion 2.x Presentation |
| .pr3 | Aldus Persuasion 3.x Presentation |
| .prc | Palm Pilot resource file |
| .prj | Project |
| .prn | Lotus 1-2-3 - Symphony Text file |
| .prs | WordPerfect for Win Printer Resource (e.g., fonts) |
| .ps | Postscript file |
| .psd | Photoshop Image |
| .pst | Microsoft Outlook personal folder |
| .pt3 | PageMaker 3 Template |
| .pt4 | PageMaker 4 Template |
| .pub | MS Publisher Page template |
| .pub | Pretty Good Privacy RSA System Public key ring file |
| .pwl | Password List |
| .py | Python script file |
| .pyc | Compiled PYTHON script file |
| .qbw | QuickBooks for Windows Spreadsheet |
| .qdat | Quicktime Installer Cache |
| .qdb | Quicken data file |
| .qdf | Quicken for Windows data file |
| .qdt | Quicken data file |
| .qfl | Quicken Family Lawyer file |
| .qfx | QuickLink Fax |
| .qic | Backup set for Microsoft Backup |
| .qif | Quicken Interchange Format |
| .qlb | MS C/C++ Quick library |
| .qlp | QuickLink Printer driver |
| .qrs | WordPerfect for Win Equation Editor support file |
| .qt | Quicktime movie |
| .qxd | QuarkXPress Document |
| .qxl | QuarkXPress Element library |
| .r00, .r01 | Compressed file archive created by RAR (supplemental to . rar ) |
| .ra | RealMedia file |
| .ram | RealMedia shortcut |
| .rar | Compressed file archive created by RAR |
| .ras | Sun Rasterfile graphics |
| .rc | MS C/C++ - Borland C++ Resource script |
| .rcg | Netscape newsgroup file |
| .rdp | Remote Desktop Connection Profile |
| .ref | Cross-reference |
| .reg | Corel programs Registration |
| .res | MS C/C++ - Borland C++ Compiled resource |
| .ri | Lotus 1-2-3 Data |
| .rib | 3DReality Graphics in Renderman format |
| .rif | Fractal Design Painter Riff bitmap graphics |
| .rl4 | Bitmap graphics |
| .rl8 | Bitmap graphics |
| .rlc | Graphics 1bit/pixel scanner output |
| .rnd | AutoCAD AutoShade Rendering Slide |
| .rs1 | Route 1 Pro Script |
| .rtf | Windows Word Rich Text Format text file (Word) |
| .rtf | Windows Help file script |
| .rvp | MS Scan Configuration file |
| .sav | Configuration file |
| .sav | Backup file |
| .sbi | Creative Labs Sound Blaster Instrument file |
| .sco | High score |
| .sdf | System Data Format (ASCII) |
| .sea | Self-Extracting compressed Macintosh file Archive |
| .sec | Pretty Good Privacy RSA System Secret key ring file |
| .sfi | HP LaserJet landscape Printer font |
| .shb | CorelShow Background |
| .shm | WordPerfect Library Shell macro |
| .shp | AutoCAD Shape file and source file for text fonts |
| .shw | WordPerfect Presentations Slide show |
| .shx | AutoCAD Shape entities |
| .sif | Windows NT Setup Setup Installation Files info |
| .sit | Compressed Macintosh archive created by STUFFIT |
| .slb | AutoCAD Slide library |
| .sld | AutoCAD Slide |
| .sng | midi sound Song |
| .som | Quattro Pro Network serial numbers |
| .spc | MS Multiplan Program |
| .spc | WordPerfect for Win Temporary file |
| .spm | WordPerfect wp{wp}.spm Data |
| .srp | QuickLink Script |
| .ssm | RealPlayer Standard Streaming Metafile |
| .sts | MS C/C++ Project status info |
| .sup | WordPerfect for Win Supplementary dictionary |
| .svd | MS Word Autosave file for document |
| .svg | MS Word Autosave file for glossary |
| .svs | MS Word Autosave file for stylesheet |
| .swf | ShockWave Flash object |
| .syn | MS Word 5 Synonym file |
| .sys | DOS System file - device driver or hardware configuration info |
| .tar | Compressed file archive created by TAR |
| .taz | Compressed file archive created by TAR and COMPRESS (equiv. to . tar.Z ) |
| .tga | Truevision Targa bitmap graphics |
| .tgz | Compressed file archive created by TAR and GNUzip (equiv. to . tar.gz ) |
| .thm | Microsoft Clipart Gallery database |
| .ths | WordPerfect for Win Thesaurus dictionary |
| .tif | Tagged Image File Format bitmap graphics |
| .tis | MahJongg 3.0 Tile set |
| .tlb | Visual C++ Type library |
| .tmf | WordPerfect for Win Tagged Font Metric file |
| .tmp | Temporary file |
| .toc | Eudora Table Of Contents |
| .tpz | Compressed file archive created by TAR and GNUzip (equiv. to . tar.gz ) |
| .trn | Quattro Translation support file |
| .tst | WordPerfect for Win Printer test file |
| .ttf | Truetype Font file |
| .txt | Text file |
| .tym | PageMaker 4 Time Stamp |
| .tz | Compressed file archive created by TAR and COMPRESS (equiv. to . tar.Z ) |
| .uhs | Universal Hint System |
| .uif | WordPerfect for Win Long prompts for windows |
| .uu | Compressed ASCII file archive created by UUEncode/UUDecode |
| .uue | Compressed ASCII file archive created by UUEncode/UUDecode |
| .vbs | Visual Basic Visual Basic Script file |
| .vbx | Visual Basic Visual Basic eXtension (custom control) |
| .vcf | VCard file |
| .vcw | MS Visual C++ Visual workbench information |
| .vda | Bitmap graphics |
| .vmc | Acrobat reader Virtual memory configuration |
| .vnc | VNC connection profile |
| .voc | Creative Voice file Digitized samples |
| .vrm | QuattroPro Overlay file |
| .vrs | WordPerfect Video Resource (e.g., video device driver) |
| .vue | 3D Studio Animation |
| .vxd | Virtual device driver |
| .wab | Outlook (Windows Address Book) File |
| .wad | Doom Game File |
| .wav | Waveform audio file |
| .wb1 | Quattro Pro Notebook |
| .wb2 | Quattro Pro Spreadsheet |
| .wba | Winace Zip file |
| .wba | WindowBlinds Compressed Skin for Windows XP |
| .wbk | WordPerfect for Win Document/workbook |
| .wcd | WordPerfect for Win Macro token list |
| .wcm | MS Works Data transmission file |
| .wcm | WordPerfect for Win Macro |
| .wcp | WordPerfect for Win Product information description |
| .wdb | MS Works Database |
| .wdl | Windows XP Watchdog Log file |
| .wfn | CorelDRAW Font |
| .wfx | WinFax Data file |
| .wg1 | Lotus 1-2-3/G Worksheet |
| .wg2 | Lotus 1-2-3 for OS/2 Worksheet |
| .wiz | MS Publisher Page wizard |
| .wk1 | Lotus 1-2-3 version 2.x - Symphony 1.1+ Spreadsheet |
| .wk3 | Lotus 1-2-3 version 3.x Spreadsheet |
| .wk4 | Lotus 1-2-3 version 3.4 Spreadsheet |
| .wkb | WordPerfect for Win Document |
| .wke | Lotus 1-2-3 educational version Spreadsheet |
| .wkq | Quattro Spreadsheet |
| .wks | Lotus 1-2-3 version 1A - Symphony 1.0 - MS Works Spreadsheet |
| .wma | Microsoft Windows Media Active Streaming file |
| .wmc | WordPerfect for Win Macro file |
| .wmf | Windows MetaFile vector graphics |
| .wmv | MS Active Streaming file |
| .wn | NeXT WriteNow Text |
| .wnf | CorelDRAW native format Outline font description |
| .wp | WordPerfect 4.2 Text file |
| .wp5 | WordPerfect 5.x Document |
| .wpd | WordPerfect 6.0 - PFS:WindowWorks Document |
| .wpf | WordPerfect Form |
| .wpg | DrawPerfect WordPerfect Graphics vector graphics |
| .wpk | WordPerfect for Win Macros |
| .wpm | WordPerfect Macros |
| .wps | MS Works Text document |
| .wq! | Quattro Pro Compressed spreadsheet |
| .wq1 | Quattro Pro Spreadsheet |
| .wri | Windows Write Text file |
| .wrl | VRML file |
| .wrml | VRML file |
| .wrs | WordPerfect for Win Windows Resource (e.g., printer driver) |
| .wsz | WinAmp Skin Zip file |
| .wwb | WordPerfect for Win Button bar for document window |
| .wwk | WordPerfect for Win Keyboard layout |
| .xla | MS Excel Add-in macro sheet |
| .xlb | MS Excel Data |
| .xlc | MS Excel Chart document |
| .xll | MS Excel Excel Dynamic Link Library |
| .xlm | MS Excel Macro sheet |
| .xlr | MS Works file |
| .xls | MS Excel Worksheet |
| .xlt | Lotus 1-2-3 - Symphony - Procomm Plus Translation table |
| .xlt | MS Excel Template |
| .xlw | MS Excel Workbook |
| .xmi | Compressed extended midi music |
| .xnk | Microsoft Exchange Shortcut |
| .xwk | Crosstalk Keyboard mapping |
| .xwp | Crosstalk Session |
| .z | Compressed file ASCII archive created by COMPRESS |
| .z3 | Infocom game module |
| .zip | Compressed ZIP file archive |
| .zoo | Compressed file archive created by ZOO |