of 1 
| Extension | File Type Developer | File Category | File Type Description | Software | Software Developer |
|---|---|---|---|---|---|
| .R | Open Source | Developer Files | R Script File | ModPlug Player | Open Source |
| .R00 | Rocky Sand Studio | Compressed Files | WinRAR Compressed Archive | PeaZip | Open Source |
| .R06 | Eugene Roshal | Compressed Files | Split Multi-volume RAR Compressed File | PeaZip | Open Source |
| .R07 | Eugene Roshal | Compressed Files | Split Multi-volume RAR Compressed File | PeaZip | Open Source |
| .R09 | Eugene Roshal | Compressed Files | Split Multi-volume RAR Compressed File | PeaZip | Open Source |
| .R36 | Eugene Roshal | Compressed Files | Split Multi-volume RAR Compressed File | PeaZip | Open Source |
| .R50 | Eugene Roshal | Compressed Files | Split Multi-volume RAR Compressed File | PeaZip | Open Source |
| .RAD | Reality Pump Studios | Audio Files | Reality Adlib Tracker Module | RADIANCE | Open Source |
| .RAP | Open Source | Page Layout Files | Raptor Flowchart File | RAPTOR | Open Source |
| .RAR | Rocky Sand Studio | Compressed Files | WinRAR Compressed Archive | PeaZip | Open Source |
| .RAS | Remedy Entertainment | Game Files | Remedy Archive System File | Audacity | Open Source |
| .RAW | Unknown Developer | Camera Raw Files | Raw Image Data File | UFRaw | Open Source |
| .RB | Larian Studios | Game Files | Divinity: Original Sin Game Data | Calibre | Open Source |
| .RBC | IBM | Developer Files | Rembo-C Script | Rembo Toolkit | Open Source |
| .RBJ | Marco Pontello | Game Files | XRK Compiled Redcode Object File | Extra Redcode Kit | Open Source |
| .RBS | Microsoft Corporation | Backup Files | Windows Installer Rollback Script File | Media Player Classic | Open Source |
| .RBX | IBM | Executable Files | Rembo-C Compiled Script | Rembo Toolkit | Open Source |
| .RCJ | Microsoft Corporation | Text Files | Robocopy Job File | Notepad2 | Open Source |
| .RCO | Sony | System Files | PlayStation Portable File | RCO Editor | Open Source |
| .RDB | EMC | Backup Files | Retrospect Backup Set | Project64 | Open Source |
| .RDC | IBM | Data Files | IBM Voice Type Languages Scripts Data File | SMPlayer | Open Source |
| .RDF | Unknown Developer | Settings Files | Resource Description Framework File | Notepad2 | Open Source |
| .README | The Document Foundation | Text Files | Readme Text Document File | Pico | Open Source |
| .REB | REBOL Technologies | Developer Files | REBOL Script File | Reimbursement Tracker | Open Source |
| .REC | TOPFIELD Co., Ltd. | Video Files | Topfield PVR Recording | Squared 5 MPEG Streamclip | Open Source |
| .REF | Clark Labs | GIS Files | IDRISI Raster Image Reference File | GDAL | Open Source |
| .REP | Rockstar Games | Game Files | Grand Theft Auto Replay File | GTA Replays Manager | Open Source |
| .REPORT | Sublime HQ Pty Ltd | Data Files | Report File | PSPad | Open Source |
| .REQ | Open Source | Uncommon Files | SSL Certificate Request File | OpenSSL | Open Source |
| .REX | Propellerhead | Audio Files | ReCycle Loop File | BRexx | Open Source |
| .REXX | SourceForge | Developer Files | Rexx Source | BRexx | Open Source |
| .REZ | Monolith Productions | Game Files | Lithtech Game Engine Resource File | Dragon UnPACKer | Open Source |
| .RFA | Autodesk, Inc. | Data Files | Revit Family File | Dragon UnPACKer | Open Source |
| .RG | Open Source | Raster Image Files | Bitmap Picture File | IrfanView | Open Source |
| .RGM | Relic Entertainment | Game Files | Essence Game Engine Model File | Corsix's Mod Studio | Open Source |
| .RGT | Relic Entertainment | Game Files | Relic Entertainment Game Texture File | Corsix's Mod Studio | Open Source |
| .RHTML | Yukihiro “Matz” Matsumoto | Web Files | Ruby HTML Web Page | Amaya | Open Source |
| .RIK | Open Source | GIS Files | SharpMap File | SharpMap | Open Source |
| .RIV | Open Source | Data Files | CRiSP Harvest File | CRiSP Harvest | Open Source |
| .RL4 | Various Developers | Raster Image Files | Bitmap Image File | IrfanView | Open Source |
| .RL8 | Microsoft Corporation | Graphic Files | Windows Bitmap Image | IrfanView | Open Source |
| .RLE | Various Developers | Raster Image Files | Run Length Encoded Bitmap | BRL-CAD | Open Source |
| .RM | RealNetworks | Video Files | RealMedia File | Eltima Elmedia Player | Open Source |
| .RMI | Open Source | Audio Files | RMID MIDI File | vanBasco's Karaoke Player | Open Source |
| .RMM | RealNetworks | Audio Files | RAM Meta File | Media Player Classic | Open Source |
| .RMP | RealNetworks | Video Files | RealPlayer Metadata Package File | Mobile Atlas Creator | Open Source |
| .RMT | The Catalina Group | System Files | Router Firmware File | Amaya | Open Source |
| .ROM | Various Developers | Uncommon Files | Read Only Memory Image | Basilisk II | Open Source |
| .ROQ | id Software | Video Files | Id Software Game Video | Media Player Classic | Open Source |
| .RP9 | Cloanto Corporation | Compressed Files | RetroPlatform Disk Image Archive | E-UAE | Open Source |
| .RPG | Open Source | Uncommon Files | Programming Language Source Code File | RPG Toolkit | Open Source |
| .RPM | Red Hat | Compressed Files | Red Hat Package Manager File | Red Hat Package Manager | Open Source |
| .RPP | Cockos Incorporated | Audio Files | REAPER Project | PSPad | Open Source |
| .RPT | SAP | Data Files | Crystal Reports File | AbiWord | Open Source |
| .RPTDESIGN | Open Source | Text Files | BIRT Report Design | BIRT | Open Source |
| .RPTLIBRARY | The Eclipse Foundation | Developer Files | Report Design Library File | BIRT | Open Source |
| .RPTR | Open Source | Page Layout Files | RafflePrinter Document | RafflePrinter | Open Source |
| .RPY | Team Shanghai Alice | Game Files | Touhou Project Replay File | gVim | Open Source |
| .RQ | Open Source | Data Files | SPARQL Query | D2RQ Platform | Open Source |
| .RQB | William Yu | Developer Files | RapidQ Quellcode File | PSPad | Open Source |
| .RSA | Various Developers | Uncommon Files | RSA Certificate File | OpenSSL | Open Source |
| .RSS | Various Developers | Web Files | Rich Site Summary | BottomFeeder | Open Source |
| .RST | David Goodger | Text Files | ReStructuredText File | GDAL | Open Source |
| .RT | RealNetworks | Web Files | RealText Streaming Text File | Eltima Elmedia Player | Open Source |
| .RTE | Autodesk, Inc. | Data Files | Revit Project Template | RTEJava | Open Source |
| .RTF | Microsoft Corporation | Text Files | Rich Text Format File | AbiWord | Open Source |
| .RUN | Open Source | Executable Files | Linux Executable File | Linux | Open Source |
| .RUS | Sublime HQ Pty Ltd | Data Files | Russian Text Or Localization Data | PSPad | Open Source |
| .RV | Astronomical Institute of the Czech Academyof Sciences | Data Files | SPEFO Stellar Spectra Analysis Data | Eltima Elmedia Player | Open Source |
| .RV3 | Open Source | Data Files | Newsbin Pro Data | DJI Interprises NewsBin Pro | Open Source |
| .RW | Open Source | Game Files | BVE Trainsim Railway Definition File | Boso View Express | Open Source |
| .RWL | Leica Biosystems | Camera Raw Files | Leica D-Lux 4 RAW Image | IrfanView | Open Source |
Optional Offer for FileViewPro by Solvusoft | EULA | Privacy Policy | Terms | Uninstall
“FileViewPro eliminates the time and frustration of trying to track down a specific piece of software to open a specific file.” - Tucows
*Files that are not supported can be opened in binary format.
Copyright © 2010-2024 FileViewPro