| tpt | Tru-Designer Presentation Template |
| tpz | Treepad Zipped Database |
| trelby | Trelby Document |
| troff | Troff Data |
| tsb | 3dMD 3D Image |
| tsce | TextShield Compressed RTF File |
| tse | Light Map Maker Scene |
| tst | Corel WordPerfect 5 Printer Test Document |
| tst | ExamView Test File |
| tsv | Tab-Separated Values Data |
| ttax | Newton Dictate Transcription Document |
| ttl | Turtle Language Document |
| ttml | Timed Text Markup Language Document |
| tts | ToolBook Translation System Document |
| tvj | TrueView Job Ticket |
| twd | MindMapper Map |
| twdi | ThinkWise Document |
| twds | MindMapper Single File |
| twdx | MindMapper 12 XML Map |
| twiki | Eclipse IDE WikiText Document |
| txd | RenderWare Texture Data |
| txe | Enriched Text File |
| txh | Lightweight Markup Language Text |
| txlf | SDL Trados XLIFF Document |
| txm | CFPwinMan Document |
| txml | Wordfast TXML Document |
| txt | MilkShape 3D ASCII Data |
| txt | Plain Text Document |
| u3d | Universal 3D File |
| ubz | Open-Sankore Document |
| ubz | OpenBoard Document |
| ucls | ObjectAid UML Explorer Class Diagram |
| udf | PI Expert Document |
| udf | UYAP Editor Document |
| uez | Ulead COOL 3D Image |
| ufdl | Universal Forms Description Language Document |
| ug | Unigraphics Drawing |
| uga | Ulead GIF Animator File |
| uhtml | UC Browser Saved Page |
| unix | Unix Readme Document |
| unx | Unix Text |
| uof | Uniform Office Format Document |
| uop | Uniform Office Format Presentation |
| uos | Uniform Office Format Spreadsheet |
| uot | Uniform Office Format Text |
| up3 | UP! Printer 3D Model |
| updf | UltraPdf Publication Document |
| urdf | Universal Robotic Description Format Document |
| utf | UTF-8 Encoded Text File |
| utf8 | Unicode UTF8 Encoded Text Document |
| utxt | Unicode Text File |
| uvl | UVLayout Document |
| uxdc | Microsoft Office XML Data Source |
| uxf | UML eXchange Format File |
| uxy | Orchida Embroidery System Design |
| uzed | Compressed Unicode GEDCOM Document |
| v2d | ViaCAD 2D Drawing |
| v3d | ViaCAD 3D Drawing |
| v3v | Vector Art 3D Model |
| vbk | Visual CADD Backup |
| vbo | Microsoft Access Package Deployment References Data |
| vc | VisiCalc Spreadsheet |
| vc6 | Ashlar-Vellum Graphite Document |
| vcd | Visual CADD Drawing |
| vce | Visual CertExam Exam Data |
| vcf | VCard File |
| vcg | VCG Graph |
| vclip | VinylMaster Clipart Data |
| vcp | ViaCAD Pro Drawing |
| vcs | vCalendar Document |
| vcx | VisiCalc Advanced Spreadsheet |
| vcz | Pictures by PC Compressed Drawing |
| vda | VDA-FS CAD Document |
| vdcl | VectorDraw Compressed Drawing |
| vdml | VectorDraw Drawing |
| vdoc | VinylMaster Cut Document |
| vdw | Microsoft Visio Web Drawing |
| vdx | Microsoft Visio Diagram XML |
| ve | Vinyl Express LXi Design |
| vec | Pictures by PC Drawing |
| vectornator | Vectornator Drawing |
| vem | VeePro Embroidery Data |
| veo | VERS Encapsulated Object |
| vew | Lotus Approach View |
| vfc | VentaFax Cover Page Template |
| vgi | VGStudio Scene |
| viewlet | Qarbon ViewletBuilder Viewlet |
| vinf | ReMpeg Log |
| vip | Husqvarna Viking VIP Embroidery Design |
| vipp | Variable Data Intelligent Postscript Printware File |
| viz | Visualize-IT Document |
| vjb | VinylMaster Pro Document |
| vl | Visual Labels Document |
| vlb | Corel Ventura Library |
| vlogo | VinylMaster Logo Document |
| vlr | Visual Liturgy Live Document |
| vmbx | HP TRIM Document |
| vmg | vMessage Text |
| vml | Vector Markup Language Document |
| vmlz | Compressed Vector Markup Language Document |
| vmm | Visual Mind Document |
| vnd | Type3 Design |
| vnscene | FX3 Scene |
| vnt | vNote Text |
| voxb | Voxler Document |
| vp3 | Husqvarna Viking 3D Embroidery Design |
| vpdoc | VoodooPad Document |
| vrd | Microsoft Visio Report Definition |
| vrm | Quattro Pro Overlay |
| vrml | VRML Document |
| vs | WorshipCenter Pro Document |
| vsd | Microsoft Visio Diagram |
| vsdm | Microsoft Visio 2013 macro-enabled Drawing |
| vsdx | Microsoft Visio 2013 Drawing |
| vss | Microsoft Visio Stencil |
| vssm | Microsoft Visio 2013 macro-enabled Stencil |
| vssx | Microsoft Visio 2013 Stencil |
| vst | Microsoft Visio Template |
| vstm | Microsoft Visio 2013 macro-enabled Template |
| vstx | Microsoft Visio 2013 Template |
| vsw | Microsoft Visio Workspace |
| vsx | Microsoft Visio Stencil XML |
| vtf | 3DESIGN CAD Document |
| vthought | Visual Thought Diagram |
| vtml | VirtualTourist Markup Language Document |
| vtx | Microsoft Visio XML Template |
| vtx | Vertex BD 2D Drawing |
| vvn | Vivien Drawing Document |
| vvt | Vivien Template Document |
| vw | Volkswriter Text Document |
| vw3 | Volkswriter 3 Text Document |
| vwf | Cadvance Drawing |
| vwi | Microsoft SharePoint Workflow Diagram |
| vwx | VectorWorks 2008 Document |
| vxc | VoxCAD Document |
| vxf | Microsoft Money VXF Data |
| vxml | VoiceXML Document |
| vxs | VX Show-n-Tell Slideshow |
| vyd | VyperHelp Help Data |
| vzl | Vizzlo Document |
| w | Ashton-Tate Applause Chart |
| w6bn | Microsoft Word 6 for Mac Document |
| w6w | Microsoft Word 6 for Mac Document |
| w8bn | Microsoft Word 98 for Mac Document |
| w8tn | Microsoft Word 98 for Mac Template |
| wac | Inkling Sketch XML Data |
| wb | Apple Logic Studio WaveBurner Document |
| wbk | Microsoft Word Backup |
| wbxml | WAP Binary XML |
| wcd | WaterCAD Document |
| wch | Corel WordPerfect Macro Facility |
| wch | GEM Word Chart Document |
| wcj | Writer's Cafe Journal Document |
| wcm | Corel WordPerfect Macro |
| wcm | Microsoft Works Communication Script |
| wcml | WebComposition Markup Language Document |
| wcn | Writer's Cafe Notebook Document |
| wcp | Charter Party Editor Document |
| wcp | Writer's Cafe Pinboard Document |
| wcs | Writer's Cafe Scrapbook Document |
| wd0 | WordExpress Document |
| wd2 | Word Express v2 Document |
| wdb | Microsoft Works Database |
| wdbn | Microsoft Word for Mac Document |
| wdf | Wintech Profiler Drawing |
| wdf | Workshare Deltafile |
| wdgx | Wedge CAD Document |
| wdl | DynaDoc Document |
| wdoc | WriteOnline Document |
| web | Xara Web Document |
| webdoc | Box Web Document |
| wef | WorkPapers Exchange Data |
| wf1 | EViews Workfile |
| wfx | WinFax Document |
| wg | WordGrinder Document |
| wg2 | Lotus 1-2-3 for OS/2 Worksheet |
| wgv | WeatherGuard Vehicle Solutions Design |
| whp | WinPLOTR Williamson Hall Plot Data |
| win32 | Windows 32-bit Readme Document |
| wire | Alias Wire File |
| wiz | Microsoft Word Wizard |
| wj2 | Lotus 1-2-3 for Japan Document |
| wje | WinJournal Entry File |
| wk | WaveStar Workbook |
| wk! | Lotus 1-2-3 Worksheet Backup |
| wk1 | Lotus 1-2-3 Worksheet |
| wke | Lotus 1-2-3 Educational Version Worksheet |
| wks | Microsoft Works Spreadsheet |
| wkz | Wingz Spreadsheet |
| wl2 | Well Logger v2 Document |
| wlb | WinLabel v2 Document |
| wlc | WISCO Word Power Document |
| wlp | Worldlabel Pro Wizard Designer Document |
| wls | 602Tab Workbook |
| wmc | WordStar 2000 Macro |
| wmd | WeaveMaker Design |
| wml | Wireless Markup Language Document |
| wmlc | Compiled WML Document |
| wn | WriteNow Text |
| wns | PrintShop Deluxe Newsletter |
| wob | RIO Designer Object |
| woc | Windows OrgChart Organization Diagram |
| wodoc | Widgit Online Document |
| word | MacWrite Word Document |
| worksheet | BBEdit Shell Worksheet |
| wp | Corel WordPerfect Document |
| wp2 | Winplot Drawing |
| wp42 | Corel WordPerfect 4 for Mac Document |
| wp50 | Corel WordPerfect 5 for Mac Document |
| wpa | Act! Word Processor Document |
| wpc | Pazzles Inspiration Studio Document |
| wpc | WordPad Converter File |
| wpc2 | Corel WordPerfect 2 for Mac Document |
| wpd | 602PC Suite Word Processing Document |
| wpd | Act! Word Processor Document |
| wpd0 | Corel WordPerfect 1 for Mac Document |
| wpd2 | Corel WordPerfect 2 for Mac Document |
| wpd3 | Corel WordPerfect 3 for Mac Document |
| wpe | Corel WordPerfect Entrust Document |
| wpf | Corel WordPerfect Form |
| wpi | Inkling Sketch Binary Data |
| wpl | DEC WPS Plus Text Document |
| wpl | WinPLOTR Document |
| wpostx | Windows Live Writer Post |
| wps | Kingsoft Writer Document |
| wps | Microsoft Works Document |
| wpso | WPS Office Writer Outward Document |
| wpsx | WPS Office Writer Document |
| wpt | Corel WordPerfect Template |
| wpt | Kingsoft Writer Template |
| wptx | WPS Office Writer Template |
| wpw | WordPerfect Works Document |
| wq! | Quattro Pro Compressed Spreadsheet |
| wq1 | Quattro Pro Spreadsheet |
| wr! | Lotus 1-2-3 Compressed Spreadsheet |
| wr1 | AccuTrans 3D Drawing |
| wrd | Psion Word File |
| wrf | Thinkfree Write Document |
| wri | Microsoft Write Document |
| wrk | Lotus Symphony Spreadsheet |
| wrl | Virtual Reality World |
| wrp | Geomagic Wrap 3D Data |
| wrz | Gzip Compressed WRL File |
| ws | SmartWare Worksheet Document |
| ws | WordStar Document |
| ws | Worksheet Builder Worksheet |
| wsa | Jasc Animation Shop Animation |
| wsc | RIO Designer Scene |
| wscdoc | Worksheet Crafter 2020 Document |
| wsd | 602PC Suite Spreadsheet Document |