| .SPN | Corel | Arquivos de configuração | Corel WordPerfect Distribution Definition | Corel WordPerfect | Corel |
| .SR2 | Sony | Arquivos Câmera Raw | Sony RAW Image | Corel AfterShot | Corel |
| .SRB | Open Source | Arquivos de dados | XWE File | Corel WordPerfect | Corel |
| .SRF | NewTek | Arquivos 3D | LightWave Surface File | Corel AfterShot | Corel |
| .SSL | Bethesda Softworks | Arquivos de jogos | Fallout Script | Corel Flow | Corel |
| .ST4 | Corel Corporation | Arquivos de vídeo | Pinnacle Studio 400 Project File | Pinnacle Studio | Corel |
| .STU | Avid Technology | Arquivos de dados | Pinnacle Studio Project | Pinnacle Studio | Corel |
| .STX | Unknown Developer | Arquivos de áudio | Scream Tracker Music Interface Kit File | Pinnacle Studio | Corel |
| .STY | Jørgen Sørensen / Jososoft | Arquivos de áudio | Yamaha/Korg Keyboard Style | Ventura Publisher | Corel |
| .SVG | Nintendo | Arquivos de jogos | Saved Game File | CorelDRAW Graphics Suite | Corel |
| .SY3 | Harvard Graphics | Arquivos de dados | Harvard Graphics Symbol File | Corel Presentations X8 | Corel |
| .SYLK | Microsoft Corporation | Arquivos de dados | Microsoft Symbolic Link File | Corel WordPerfect X8 | Corel |
| .TAR | Jean-loup Gailly and Mark Adler | Arquivos de dados | Consolidated Unix File Archive | Corel WinZip 21 | Corel |
| .TAZ | Smith Micro Software | Arquivos comprimidos | Tar Zipped File | Corel WinZip 21 | Corel |
| .TBZ2 | Winrar | Arquivos comprimidos | Tar BZip 2 Compressed File | Corel WinZip 21 | Corel |
| .TER | Planetside Software | Arquivos de dados | Terragen Terrain File | CorelDRAW Graphics Suite | Corel |
| .TG | Julian Gabriel Casadesus and Others | Arquivos de áudio | TuxGuitar Document | Corel WinZip 21 | Corel |
| .TGT | Corel | Arquivos de dados | Corel Custom Data | CorelDRAW Graphics Suite | Corel |
| .TGZ | Various Developers | Arquivos comprimidos | Gzipped Tar File | Corel WinZip 21 | Corel |
| .THS | Corel | Arquivos de dados | Corel WordPerfect Thesaurus Dictionary | Corel WordPerfect | Corel |
| .TIF | XnSoft | Arquivos de imagem Raster | Tagged Image File Format | CorelDRAW Graphics Suite | Corel |
| .TIFF | XnSoft | Arquivos de imagem Raster | Tagged Image File Format | CorelDRAW Graphics Suite | Corel |
| .TIM | Sierra Entertainment | Arquivos de jogos | The Incredible Machine Level | CorelDRAW Graphics Suite | Corel |
| .TMF | Corel | Arquivos de fonte | Corel WordPerfect Tagged Font Metric File | Corel WordPerfect X8 | Corel |
| .TP3 | Software Publishing Corporation (SPC) | Arquivos de layout de página | Harvard Graphics DOS Template File | Corel Presentations X8 | Corel |
| .TS | Various Developers | Arquivos de vídeo | Video Transport Stream File | Pinnacle Studio | Corel |
| .TSB | 3dMD | Arquivos Gráficos | 3dMD Or 3Q Viewer 3D Image | WinZip | Corel |
| .TST | Measurement Computing | Arquivos de dados | TestPoint Test File | Corel WordPerfect X8 | Corel |
| .TTF | Apple | Arquivos de fonte | TrueType Font | CorelDRAW Graphics Suite | Corel |
| .TV | Corel | Arquivos de configuração | Corel Paradox Table View Settings | Corel Paradox | Corel |
| .TV1 | Corel | Arquivos de dados | Corel WordPerfect Data | Corel WordPerfect | Corel |
| .TV5 | Corel Corporation | Arquivos Temporários | Corel WordPerfect Overflow File | Corel WordPerfect X8 | Corel |
| .TV6 | Corel Corporation | Arquivos de dados | Corel WordPerfect Overflow Data File | Corel WordPerfect X8 | Corel |
| .TV7 | Corel Corporation | Arquivos Temporários | Corel WordPerfect Overflow File | Corel WordPerfect X8 | Corel |
| .TV9 | Corel Corporation | Arquivos Temporários | Corel WordPerfect Overflow File | Corel WordPerfect X8 | Corel |
| .TZ | Smith Micro Software | Arquivos comprimidos | Compressed Tar Archive | Corel WinZip 21 | Corel |
| .U3P | SanDisk Corporation | Arquivos executáveis | U3 Platform Install Data File | WinZip | Corel |
| .UAS | Ulead Systems | Arquivos de cópia | Ulead PhotoImpact Backup File | PhotoImpact | Corel |
| .UCG | Corel Corporation | Arquivos Gráficos | CG Infinity Graphic | Ulead MediaStudio | Corel |
| .UDI | Pinnacle Systems Inc. | Arquivos miscelâneas | Dazzle DVD Complete File | CorelDRAW Graphics Suite | Corel |
| .UEZ | Ulead Systems | Arquivos Gráficos | Ulead COOL 3D Image | MotionStudio 3D | Corel |
| .UFO | Ulead Systems | Arquivos de imagem Raster | Ulead File Object | PhotoImpact | Corel |
| .UG | Autodesk, Inc. | Arquivos de imagem vector | Drawing File | CorelDRAW Graphics Suite | Corel |
| .UOL | Ulead Systems | Arquivos Gráficos | PhotoImpact Clipart Image | PhotoImpact | Corel |
| .UP2 | Ulead Systems | Arquivos miscelâneas | Ulead Cool 3D Plugins Board File | MotionStudio 3D | Corel |
| .UPD | Various Developers | Arquivos de Texto | Program Update Information | Corel WordPerfect | Corel |
| .UPJ | Ulead Systems | Arquivos de dados | Ulead Project File | Burn.Now | Corel |
| .USTAR | Smith Micro Software | Arquivos de dados | Uniform Standard Tape Archive Format File | Corel WinZip 21 | Corel |
| .UU | Open Source | Arquivos codificados | Uuencoded File | Corel WinZip 21 | Corel |
| .UUE | Open Source | Arquivos codificados | Uuencoded File | Corel WinZip 21 | Corel |
| .UVP | Corel | Arquivos de dados | Ulead MediaStudio Data File+ | Ulead MediaStudio | Corel |
| .UWL | Corel | Arquivos de dados | User Word List File | Corel WordPerfect X8 | Corel |
| .VDA | Microsoft Corporation | Arquivos de imagem Raster | Targa Bitmap Image File | Corel Painter | Corel |
| .VFT | Corel | Arquivos de vídeo | Corel VideoStudio Filter File | Corel VideoStudio Pro | Corel |
| .VGR | Corel | Arquivos de imagem Raster | Ventura Publisher Bitmap File | Ventura Publisher | Corel |
| .VMF | Valve | Arquivos de jogos | Valve Map File | Ventura Publisher | Corel |
| .VRM | Augmentra Ltd | Arquivos GIS | ViewRanger Map File | Corel Quattro Pro | Corel |
| .VRS | Corel | Arquivos de sistema | Corel WordPerfect Video Device Driver | Corel WordPerfect | Corel |
| .VS2 | Corel | Arquivos de vídeo | Corel VideoStudio 2 Data | Corel VideoStudio Pro | Corel |
| .VSD | Microsoft Corporation | Arquivos de imagem vector | Microsoft Visio Drawing File | CorelDRAW Graphics Suite | Corel |
| .VSP | Corel | Arquivos de vídeo | VideoStudio Project File | Corel VideoStudio Pro | Corel |
| .VST | Microsoft Corporation | Arquivos de imagem Raster | Targa Bitmap Image File | Corel Painter | Corel |
| .VW | Lifetree Software | Arquivos de Texto | Volkswriter Text File | Corel WordPerfect X8 | Corel |
| .W30 | Corel | Arquivos de fonte | Ventura Publisher Printer Font | Ventura Publisher | Corel |
| .W51 | Corel Corporation | Arquivos de dados | Corel WordPerfect 5.1 Document File | Corel WordPerfect | Corel |
| .W52 | Corel | Arquivos de dados | Corel WordPerfect For Windows Document | Corel WordPerfect | Corel |
| .W61 | Corel Corporation | Arquivos de Texto | Corel WordPerfect 6.1 Document | Corel WordPerfect | Corel |
| .WB2 | Threefold Photos, Inc. | Arquivos de imagem Raster | Webshots Picture File | Corel Quattro Pro | Corel |
| .WBK | Microsoft Corporation | Arquivos de cópia | Word Document Backup | Corel WordPerfect X8 | Corel |
| .WCM | Corel | Arquivos executáveis | WordPerfect Macro | Corel WordPerfect X8 | Corel |
| .WCP | Corel | Arquivos de vídeo | WinDVD Creator Project File | Corel WinDVD | Corel |
| .WD | Corel Corporation | Arquivos Gráficos | Corel PaintShop Photo Pro Image | PaintShop Pro | Corel |
| .WEAP | id Software | Arquivos de jogos | Quake 3 Engine Weapon File | Corel WordPerfect | Corel |
| .WFN | Corel | Arquivos de fonte | Corel Font Or Symbol File | Corel WordPerfect X8 | Corel |
| .WI | Open Source | Arquivos de imagem Raster | Wavelet Image | Corel Presentations X8 | Corel |
| .WIDGET | Microsoft Corporation | Arquivos executáveis | Microsoft Windows Mobile Widget | WinZip | Corel |
| .WJF | Corel | Arquivos de cópia | WinZip Job File | WinZip | Corel |
| .WK1 | IBM | Arquivos de dados | Lotus Worksheet | Corel Quattro Pro | Corel |
| .WK4 | IBM | Arquivos de dados | Lotus Lotus 1-2-3 V4 Worksheet | Corel Quattro Pro | Corel |
| .WKB | Corel | Arquivos de Texto | Corel WordPerfect Document | Corel WordPerfect | Corel |
| .WKE | IBM | Arquivos de planilha | Lotus 1-2-3 Educational Version Worksheet | Corel Quattro Pro | Corel |
| .WKQ | Corel | Arquivos de planilha | Quattro Pro For DOS Spreadsheet File | Corel Quattro Pro | Corel |
| .WMF | Microsoft Corporation | Arquivos de imagem vector | Windows Metafile | CorelDRAW Graphics Suite | Corel |
| .WMZ | Microsoft Corporation | Arquivos de configuração | Compressed Windows Media Player Skin | WinZip | Corel |
| .WN | WN | Arquivos Web | WN Web File | Corel WordPerfect | Corel |
| .WNF | Corel | Arquivos de fonte | CorelDraw Outline Font | CorelDRAW Graphics Suite | Corel |
| .WP | Corel | Arquivos de Texto | WordPerfect Document | Corel WordPerfect X8 | Corel |
| .WP4 | Corel | Arquivos de Texto | WordPerfect 4 Document | Corel WordPerfect X8 | Corel |
| .WP5 | Corel | Arquivos de Texto | WordPerfect 5 Document | Corel WordPerfect X8 | Corel |
| .WP6 | Corel | Arquivos de Texto | WordPerfect 6 Document | Corel WordPerfect X8 | Corel |
| .WPD | Corel | Arquivos de Texto | WordPerfect Document | Corel WordPerfect X8 | Corel |
| .WPF | Corel | Arquivos de dados | WordPerfect Form | Corel WordPerfect | Corel |
| .WPG | Corel | Arquivos de imagem vector | WordPerfect Graphic File | CorelDRAW Graphics Suite | Corel |
| .WPK | Corel | Arquivos executáveis | WordPerfect Macro | Corel WordPerfect X8 | Corel |
| .WPP | Serif | Arquivos Web | WebPlus Project File | Corel WordPerfect X8 | Corel |
| .WPT | Corel | Arquivos de Texto | WordPerfect Template | Corel WordPerfect X8 | Corel |
| .WPW | PC SOFT | Arquivos de desenvolvedor | WinDev Mobile Window File | Corel WordPerfect X8 | Corel |
| .WQ! | Corel | Arquivos de planilha | Corel Quattro Pro Compressed Spreadsheet | Corel Quattro Pro | Corel |
| .WQ0 | Corel | Arquivos de planilha | Quattro Pro For DOS Spreadsheet File | Corel Quattro Pro | Corel |
| .WQ1 | Corel | Arquivos de planilha | Quattro Pro For DOS Spreadsheet File | Corel Quattro Pro | Corel |
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