| .001 | Smith Micro Software | Ficheiros de Cópia de Segurança | Split Archive File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .002 | Various Developers | Ficheiros de Cópia de Segurança | Split Archive Part 2 File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .003 | Welltek Software | Ficheiros de Cópia de Segurança | Split Archive Part 3 File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .004 | SourceForge | Ficheiros Compactados | Compressed File From A Multi-volume Archive (part 4) | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .005 | bhv | Ficheiros de Dados | Winfunktion Mathematik V8.0 Julia Fractal File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .006 | bhv | Ficheiros de Dados | Winfunktion Mathematik V8.0 Julia Fractal File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .007 | bhv | Ficheiros de Dados | Winfunktion Mathematik V8.0 Julia Fractal File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .008 | ESRI (Environmental Systems Research Institute) | Ficheiros GIS | International S-57 Hydrographic Data Electronic Navigation Chart | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .009 | bhv | Ficheiros de Dados | Winfunktion Mathematik V8.0 Julia Fractal File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .010 | bhv | Ficheiros de Dados | Winfunktion Mathematik V8.0 Julia Fractal File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .2D | Archway Systems | Ficheiros CAD | VersaCAD 2D Drawing File | Amapi 3D | Smith Micro Software |
| .A3D | AlternativaPlatform | Ficheiros de Imagem 3D | Alternativa Player 3D Export File | Amapi 3D | Smith Micro Software |
| .ANIME | Smith Micro Software | Ficheiros de Dados | Anime Studio Document | Smith Micro Moho Debut 12 | Smith Micro Software |
| .APK | Google | Ficheiros Compactados | Android Package File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .APPLE | Apple | Ficheiros de Dados | Apple AppleSingle Data File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .ARC | Symantec Corporation | Ficheiros de Cópia de Segurança | Norton Backup Archive | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .ARJ | Robert K. Jung | Ficheiros Compactados | ARJ Compressed File Archive | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .B2A | Smith Micro Software | Ficheiros Codificados | Btoa Encoded File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .B64 | Smith Micro Software | Ficheiros Compactados | Base64 MIME-Encoded File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .BHX | Open Source | Ficheiros Codificados | BinHex Encoded File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .BIN | Unknown Developer | Ficheiros de Imagem de Disco | Binary Disk Image File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .BTOA | Smith Micro Software | Ficheiros Codificados | Binary-to-ASCII Encoded File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .BZ | Smith Micro Software | Ficheiros Compactados | Bzip Compressed File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .BZ2 | Julian Seward | Ficheiros Compactados | Bzip2 Compressed File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .BZIP2 | Julian Seward | Ficheiros Compactados | Bzip2 Compressed Archive | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .CAB | Microsoft Corporation | Ficheiros de Sistema | Windows Cabinet File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .CB7 | Smith Micro Software | Ficheiros Compactados | Comic Book 7-Zip Archive | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .CBR | Unknown Developer | Ficheiros Compactados | Comic Book RAR Archive | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .CBT | Various Developers | Ficheiros Compactados | Comic Book TAR File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .CBZ | Open Source | Ficheiros de Imagem 3D | Comic Book Zip Archive File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .CM2 | Smith Micro Software | Ficheiros de Imagem 3D | Poser Camera Set File | Smith Micro Poser | Smith Micro Software |
| .CPT | Corel | Ficheiros de Imagem Raster | Corel Photo-Paint Image | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .CR2 | Canon Inc. | Ficheiros Raw de Câmera | Canon Digital Camera Raw Image File | Poser | Smith Micro Software |
| .CRZ | Smith Micro Software | Ficheiros de Imagem 3D | Compressed Poser Character Rigging File | Smith Micro Poser | Smith Micro Software |
| .CST | Smith Micro Software | Ficheiros de Layout de Página | Manga Studio Story File | Manga Studio | Smith Micro Software |
| .EFW | Corel | Ficheiros Compactados | Renamed Zip Or Executable File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .ENC | Smith Micro Software | Ficheiros Codificados | Encoded Data File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .FC2 | Smith Micro Software | Ficheiros de Imagem 3D | Poser Face Pose File | Smith Micro Poser | Smith Micro Software |
| .FMC | Interscape | Ficheiros de Dados | FormConnect Form File | MotionArtist | Smith Micro Software |
| .FMD | Smith Micro Software | Ficheiros de Dados | MotionArtist Document File | MotionArtist | Smith Micro Software |
| .GTAR | Free Software Foundation | Ficheiros de Dados | GNU Tar Archive | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .GZ | GNU Project | Ficheiros Compactados | Gnu Zipped Archive | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .HBX | Open Source | Ficheiros Codificados | BinHex Encoded File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .HD2 | Smith Micro Software | Ficheiros de Imagem 3D | Poser Hand Pose File | Poser | Smith Micro Software |
| .HEX | Intel Corporation | Ficheiros de Desenvolvedor | Hexadecimal Source File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .HFX | Smith Micro Software | Ficheiros de Dados | HotFax Data File | HotFax | Smith Micro Software |
| .HR2 | Smith Micro Software | Ficheiros de Imagem 3D | Poser Hair File | Smith Micro Poser | Smith Micro Software |
| .HRZ | Unknown Developer | Ficheiros Gráficos | Slow Scan TeleVision File (SSTV) | Poser | Smith Micro Software |
| .LHA | WinAbility Software | Ficheiros Compactados | LHARC Compressed Archive | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .LHARC | WinAbility Software | Ficheiros Compactados | LHARC Compressed Archive | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .LT2 | Smith Micro Software | Ficheiros de Imagem 3D | Poser Light Set File | Smith Micro Poser | Smith Micro Software |
| .LWO | NewTek | Ficheiros de Imagem 3D | LightWave 3D Object File | Poser | Smith Micro Software |
| .LZH | Various Developers | Ficheiros Compactados | LZH Compressed File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .LZMA | Igor Pavlov | Ficheiros Compactados | LZMA Compressed File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .MAP | id Software | Ficheiros de Jogo | Quake Engine Map File | Poser | Smith Micro Software |
| .MC5 | Smith Micro Software | Ficheiros de Imagem 3D | Poser 5 Material File | Smith Micro Poser | Smith Micro Software |
| .MC6 | Smith Micro Software | Ficheiros Gráficos | Poser 6 Material File | Poser | Smith Micro Software |
| .MCWORLD | Smith Micro Software | Ficheiros de Jogo | Minecraft World Backup File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .MIM | Internet Engineering Task Force | Ficheiros Codificados | Multi-Purpose Internet Mail Message File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .MIME | Various Developers | Ficheiros Codificados | Multi-Purpose Internet Mail Extension | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .MME | Smith Micro Software | Ficheiros Codificados | Multipurpose Internet Mail Extensions | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .MOHO | Smith Micro Software | Ficheiros de Dados | Moho Animation Project | Smith Micro Moho Debut 12 | Smith Micro Software |
| .MOR | Corel | Ficheiros de Dados | Corel Shared Writing Tools Data | Poser | Smith Micro Software |
| .OBZ | Smith Micro Software | Ficheiros de Imagem 3D | Compressed 3D Object File | Poser | Smith Micro Software |
| .PAK | Unknown Developer | Ficheiros de Jogo | Video Game Package | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .PET | Larry Short, Mick Amadio and Puppy community | Ficheiros Compactados | Puppy Linux Install Package | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .PF | Smith Micro Software | Ficheiros Compactados | Private File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .PIT | Samsung Electronics | Ficheiros de Sistema | Samsung Phone Firmware File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .PIZ | Winrar | Ficheiros Compactados | Zipped File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .PMD | Adobe Systems Incorporated | Ficheiros de Layout de Página | PageMaker Document | Poser | Smith Micro Software |
| .PP2 | Pingman Tools | Ficheiros de Dados | PingPlotter Data File | Smith Micro Poser | Smith Micro Software |
| .PPZ | Smith Micro Software | Ficheiros de Imagem 3D | Compressed Poser Prop File | Smith Micro Poser | Smith Micro Software |
| .PZ2 | Smith Micro Software | Ficheiros de Imagem 3D | Poser Pose File | Smith Micro Poser | Smith Micro Software |
| .PZ3 | Smith Micro Software | Ficheiros de Imagem 3D | Poser Scene File | Poser | Smith Micro Software |
| .PZZ | Smith Micro Software | Ficheiros de Imagem 3D | Poser Compressed Scene File | Poser | Smith Micro Software |
| .R00 | Rocky Sand Studio | Ficheiros Compactados | WinRAR Compressed Archive | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .R06 | Eugene Roshal | Ficheiros Compactados | Split Multi-volume RAR Compressed File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .R07 | Eugene Roshal | Ficheiros Compactados | Split Multi-volume RAR Compressed File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .R09 | Eugene Roshal | Ficheiros Compactados | Split Multi-volume RAR Compressed File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .R30 | Eugene Roshal | Ficheiros Compactados | WinRAR Split Archive Part 30 | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .R36 | Eugene Roshal | Ficheiros Compactados | Split Multi-volume RAR Compressed File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .R50 | Eugene Roshal | Ficheiros Compactados | Split Multi-volume RAR Compressed File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .RAR | Rocky Sand Studio | Ficheiros Compactados | WinRAR Compressed Archive | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .RSR | Smith Micro Software | Ficheiros de Imagem Raster | Poser Model Preview File | Smith Micro Poser | Smith Micro Software |
| .S07 | Eugene Roshal | Ficheiros Compactados | Split Multi-volume RAR Compressed File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .S09 | Eugene Roshal | Ficheiros Compactados | Split Multi-volume RAR Compressed File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .S7Z | Igor Pavlov | Ficheiros Compactados | 7-Zip Compressed File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .SEA | Smith Micro Software | Ficheiros Compactados | Self-Extracting Archive | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .SIT | Smith Micro Software | Ficheiros Compactados | StuffIt Archive | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .SITX | Smith Micro Software | Ficheiros Compactados | StuffIt X Archive | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .SMV | Smith Micro Software | Ficheiros de Vídeo | VideoLink Mail Video File | Smith Micro Videolink Pro | Smith Micro Software |
| .SOW | Interplay Entertainment | Ficheiros de Jogo | Descent ARJ Archive | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .TAR | Jean-loup Gailly and Mark Adler | Ficheiros de Dados | Consolidated Unix File Archive | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .TAZ | Smith Micro Software | Ficheiros Compactados | Tar Zipped File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .TBZ2 | Winrar | Ficheiros Compactados | Tar BZip 2 Compressed File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .TG | Julian Gabriel Casadesus and Others | Ficheiros de Áudio | TuxGuitar Document | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .TGZ | Various Developers | Ficheiros Compactados | Gzipped Tar File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .TIG | Texas Instruments, Inc. | Ficheiros de Cópia de Segurança | TI Connect Backup File | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .TZ | Smith Micro Software | Ficheiros Compactados | Compressed Tar Archive | Smith Micro StuffIt Deluxe | Smith Micro Software |
| .U3D | 3D Industry Forum | Ficheiros de Imagem 3D | Universal 3D File | Smith Micro Poser | Smith Micro Software |
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