| Extension |
File Description |
|
Popularity |
| .1st | Readme File | | Average |
| .abw | AbiWord Document | | Average |
| .act | FoxPro Documenting Wizard Action Diagram | | Average |
| .adt | AutoCAD Audit Log | | Uncommon |
| .aim | AIMMS ASCII Model File | | Average |
| .ans | ANSI Text File | | Average |
| .asc | ASCII Text File | | Average |
| .asc | Autodesk ASCII Export File | | Average |
| .ascii | ASCII Text File | | Average |
| .ase | Autodesk ASCII Scene Export File | | Average |
| .aty | Association Type Placeholder | | Uncommon |
| .bad | Exchange Badmail File | | Average |
| .bbs | Bulletin Board System Text | | Uncommon |
| .bdp | Exchange Diagnostic Message | | Average |
| .bdr | Exchange Non-Delivery Report Body File | | Average |
| .bean | Bean Rich Text Document | | Average |
| .bib | BibTeX Bibliography Database | | Average |
| .bib | Bibliography Document | | Average |
| .bna | Barna Word Processor Document | | Average |
| .boc | EasyWord Big Document | | Average |
| .charset | Character Set | | Average |
| .chord | Song Chords File | | Average |
| .crd | Guitar Tabs | | Average |
| .crwl | Windows Crawl File | | Average |
| .cyi | Clustify Input File | | Average |
| .dbt | Database Text File | | Average |
| .dct | FoxPro Database Memo | | Average |
| .dgs | Dagesh Pro Document | | Average |
| .diz | Description in Zip File | | Average |
| .dne | Netica Text File | | Average |
| .doc | Microsoft Word Document | | Very Common |
| .doc | WordPad Document | | Average |
| .docm | Word 2007 Macro-Enabled Document | | Average |
| .docx | Microsoft Word Open XML Document | | Very Common |
| .dot | Microsoft Word Template | | Average |
| .dotm | Word 2007 Macro-Enabled Document Template | | Average |
| .dotx | Word 2007 Document Template | | Average |
| .dvi | Device Independent Format File | | Average |
| .dx | DEC WPS Plus File | | Average |
| .email | Outlook Express Email Message | | Average |
| .emlx | Mail Message | | Average |
| .epp | EditPad Pro Project | | Average |
| .err | Error Log File | | Average |
| .err | FoxPro Compilation Error | | Average |
| .etf | ENIGMA Transportable File | | Average |
| .etx | Structure Enhanced Text (Setext) File | | Uncommon |
| .euc | Extended Unix Code File | | Rare |
| .faq | Frequently Asked Questions Document | | Average |
| .fb2 | FictionBook 2.0 File | | Average |
| .fbl | CADfix Command Level Log File | | Average |
| .fdf | Acrobat Forms Data Format | | Uncommon |
| .fdr | Final Draft Document | | Average |
| .fds | Final Draft Secure Copy | | Average |
| .fes | Fileless Occurrence Placeholder | | Uncommon |
| .flr | Flare Decompiled ActionScript File | | Average |
| .fpt | FileMaker Pro Database Memo File | | Average |
| .fpt | FoxPro Table Memo | | Average |
| .frt | FoxPro Report Memo | | Average |
| .fxc | FilePackager Configuration | | Average |
| .gio | Adagio Score | | Average |
| .gio | Nyquist MIDI File | | Average |
| .gpn | GlidePlan Map Document | | Average |
| .gsd | Generic Station Description File | | Average |
| .gthr | Gather Log File | | Average |
| .gv | GraphcViz DOT File | | Average |
| .hht | Help and Support Center HHT File | | Average |
| .hs | Java HelpSet File | | Average |
| .hwp | Hangul (Korean) Text Document | | Rare |
| .hz | Chinese (Hanzi) Text | | Uncommon |
| .idx | Outlook Express Mailbox Index File | | Average |
| .iil | CleanSweep Installation Log | | Rare |
| .imapmbox | IMAP Mailbox | | Average |
| .ipf | OS/2 Help File | | Average |
| .jis | Japanese Industry Standard Text | | Average |
| .jp1 | Japanese (Romaji) Text File | | Rare |
| .klg | Log File | | Average |
| .klg | KOFIA Log | | Average |
| .kml | Keyhole Markup Language | | Average |
| .knt | KeyNote Note File | | Average |
| .kon | Yahoo! Widget XML File | | Average |
| .kwd | KWord Document | | Average |
| .latex | LaTeX Document | | Average |
| .lbt | FoxPro Label Memo | | Average |
| .lis | SQR Output File | | Average |
| .lit | eBook File | | Common |
| .lnt | Laego Note Taker File | | Average |
| .log | Log File | | Very Common |
| .lp2 | iLEAP Word Processing Document | | Average |
| .lrc | Lyrics File | | Average |
| .lst | Data List | | Common |
| .lst | FoxPro Documenting Wizard List | | Average |
| .ltr | Letter File | | Average |
| .lue | Norton LiveUpdate Log File | | Rare |
| .luf | Lipikar Uniform Format File | | Average |
| .lwp | Lotus Word Pro Document | | Average |
| .lxfml | LEGO Digital Designer XML File | | Average |
| .lyt | TurboTax Install Log File | | Average |
| .lyx | LyX Document | | Average |
| .man | Unix Manual | | Average |
| .mbox | E-mail Mailbox File | | Average |
| .me | Readme Text File | | Rare |
| .mell | Mellel Word Processing File | | Average |
| .mellel | Mellel Word Processing Document | | Average |
| .mnt | FoxPro Menu Memo | | Average |
| .msg | Mail Message | | Very Common |
| .mw | MacWrite Text Document | | Uncommon |
| .mwd | MarinerWrite Document | | Average |
| .mwp | Lotus Word Pro SmartMaster File | | Average |
| .nfo | Warez Information File | | Average |
| .notes | Memento Notes File | | Average |
| .now | Readme File | | Average |
| .nwctxt | NoteWorthy Composer Text File | | Uncommon |
| .nzb | NewzBin File | | Average |
| .ocr | FAXGrapper Fax Text File | | Uncommon |
| .odm | OpenDocument Master Document | | Average |
| .odt | OpenDocument Text Document | | Average |
| .ofl | Ots File List | | Average |
| .openbsd | OpenBSD Readme File | | Rare |
| .opml | OPML File | | Common |
| .ort | Rich Text Editor Document | | Uncommon |
| .ott | OpenDocument Text Document Template | | Average |
| .p7s | Digitally Signed Message | | Average |
| .pages | Pages Document | | Very Common |
| .pfx | First Choice Word Processing Document | | Average |
| .pjt | FoxPro Project Memo | | Average |
| .prt | Printer Output File | | Average |
| .psw | Pocket Word Document | | Average |
| .pvj | ProofVision Job Ticket | | Uncommon |
| .pvm | Photo Video Manifest File | | Uncommon |
| .pwi | Pocket Word Document | | Average |
| .qdl | QDL Program | | Average |
| .rad | Radar ViewPoint Radar Data | | Average |
| .readme | Readme File | | Average |
| .rng | RELAX NG File | | Average |
| .rpt | Generic Report | | Average |
| .rst | reStructuredText File | | Average |
| .rt | RealText Streaming Text File | | Average |
| .rtd | RagTime Document | | Average |
| .rtf | Rich Text Format File | | Very Common |
| .rtfd | Rich Text Format Directory File | | Average |
| .rtx | Rich Text Document | | Average |
| .run | Runscanner Scan File | | Average |
| .rzk | File Crypt Password File | | Average |
| .rzn | Red Zion Notes File | | Average |
| .saf | SafeText File | | Average |
| .safetext | SafeText File | | Average |
| .sam | Ami Pro Document | | Average |
| .save | Nano Temporary Save File | | Rare |
| .scc | Scenarist Closed Caption File | | Average |
| .scm | Schema File | | Uncommon |
| .sct | FoxPro Form Memo | | Average |
| .scw | Movie Magic Screenwriter Document | | Average |
| .sdm | StarOffice Mail Message | | Uncommon |
| .sdw | StarOffice Writer Text Document | | Average |
| .sgm | SGML File | | Average |
| .sig | Signature File | | Common |
| .sls | Image Playlist | | Average |
| .sms | Exported SMS Text Message | | Average |
| .ssa | Sub Station Alpha Subtitle File | | Average |
| .strings | Text Strings File | | Average |
| .stw | StarOffice Text Document Template | | Average |
| .sty | LaTeX Style | | Average |
| .sub | Subtitle File | | Average |
| .sxw | StarOffice Writer Text Document | | Average |
| .tab | Tab Separated Data File | | Uncommon |
| .tab | Guitar Tablature File | | Average |
| .tdf | Guide Text Definition File | | Average |
| .tdf | Xserve Test Definition File | | Average |
| .tex | LaTeX Source Document | | Average |
| .text | Plain Text File | | Average |
| .thp | TurboTax Text String | | Average |
| .tlb | VAX Text Library | | Average |
| .tm | TeXmacs Document | | Uncommon |
| .tmx | Translation Memory eXchange File | | Average |
| .tpc | Topic Connection Placeholder | | Uncommon |
| .tvj | TrueView Job Ticket | | Uncommon |
| .txt | Plain Text File | | Very Common |
| .u3i | U3 Application Information File | | Average |
| .unauth | SiteMinder Unauthorized Message File | | Average |
| .unx | Unix Text File | | Average |
| .upd | Program Update Information | | Average |
| .utf8 | Unicode UTF8-Encoded Text | | Average |
| .utxt | Unicode Text File | | Average |
| .vct | Visual Class Library Memo | | Average |
| .vnt | Mobile Phone vNote File | | Average |
| .wbk | Word Document Backup | | Average |
| .wbk | WordPerfect Workbook | | Average |
| .wcf | WebEx Saved Chat Session | | Average |
| .wgz | S60 Web Runtime Widget Package | | Average |
| .wn | WriteNow Text Document | | Average |
| .wp | WordPerfect Document | | Uncommon |
| .wp4 | WordPerfect 4 Document | | Average |
| .wp5 | WordPerfect 5 Document | | Average |
| .wp6 | WordPerfect 6 Document | | Average |
| .wp7 | WordPerfect 7 Document | | Average |
| .wpa | ACT! Word Processing Document | | Average |
| .wpd | WordPerfect Document | | Very Common |
| .wpd | ACT! 2 Word Processing Document | | Average |
| .wpd | 602Text Word Processing Document | | Rare |
| .wpl | DEC WPS Plus Text Document | | Average |
| .wps | Microsoft Works Word Processor Document | | Very Common |
| .wps | Kingsoft Writer Document | | Average |
| .wpt | WordPerfect Template | | Average |
| .wri | Windows Write Document | | Average |
| .wsh | Windows Script Host Settings | | Average |
| .xdl | XML Schema File | | Average |
| .xdl | Oracle Expert Definition Language File | | Average |
| .xlf | XLIFF Document | | Average |
| .xwp | XMLwriter Project | | Average |
| .xwp | Xerox Writer Text Document | | Average |
| .xwp | Crosstalk Session File | | Rare |
| .xy | XYWrite Document | | Average |
| .xy3 | XYWrite III Document | | Average |
| .xyp | XYWrite Plus Document | | Average |
| .xyw | XYWrite for Windows Document | | Average |
| .ybk | YanCEyWare Reader eBook | | Average |
| .yml | YAML Document | | Average |
| .zw | Chinese Text File | | Rare |
