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