.RA1 | Unknown Developer | Uncommon Files | Unknown File Type | Unknown Software | Unknown Developer |
.RABBIT | Apple | Uncommon Files | Unknown Apple II File (Golden Orchard Apple II CD Rom) | Golden Orchard | DigiSoft Innovations |
.RADIOREVOL | Unknown Developer | Uncommon Files | Uncommon File Extension | Unknown Software | Unknown Developer |
.RAINDROPPI | Unknown Developer | Uncommon Files | Uncommon File Extension | Unknown Software | Unknown Developer |
.RAL | Span Software | Uncommon Files | WinRail Track Design File | WinRail | Span Software |
.RAMDISK | DigiSoft Innovations | Uncommon Files | An Unknown Apple II File | Golden Orchard | DigiSoft Innovations |
.RASMOL | Roger Sayle | Uncommon Files | RasMol File | RasMol | SourceForge |
.RASTERW | Unknown Developer | Uncommon Files | Unknown File Type | Unknown Software | Unknown Developer |
.RAT | World Wide Web Consortium (W3C) | Uncommon Files | PICS Rating File | Microsoft Notepad | Microsoft Corporation |
.RAW_PPM | Unknown Developer | Uncommon Files | Unknown File Type | Unknown Software | Unknown Developer |
.RAZ | Unknown Developer | Uncommon Files | Unknown File Type | Unknown Software | Unknown Developer |
.RCE | Unknown Developer | Uncommon Files | NTgraph GUI Control 3D File | Unknown Software | Unknown Developer |
.RCPROFILE | Unknown Developer | Uncommon Files | Uncommon File Extension | Unknown Software | Unknown Developer |
.RCV | Oracle Corporation | Uncommon Files | Oracle Recovery Manager Script | Oracle Database | Oracle Corporation |
.RDB-SHM | Unknown Developer | Uncommon Files | Unknown File Type | Unknown Software | Unknown Developer |
.RDB2 | Unknown Developer | Uncommon Files | Unknown File Type | Unknown Software | Unknown Developer |
.RDM | Devolutions | Uncommon Files | Remote Desktop Manager Exported Entries | Remote Desktop Manager | Devolutions |
.REALDOWNLO | Unknown Developer | Uncommon Files | Uncommon File Extension | Unknown Software | Unknown Developer |
.RECOVERYDA | Unknown Developer | Uncommon Files | Unknown File Type | Unknown Software | Unknown Developer |
.REFER | Unknown Developer | Uncommon Files | Unknown File Type | Unknown Software | Unknown Developer |
.REGDUMP | Unknown Developer | Uncommon Files | Unknown File Type | Unknown Software | Unknown Developer |
.REI | Unknown Developer | Uncommon Files | Uncommon File Extension | Unknown Software | Unknown Developer |
.REM | BlackBerry | Uncommon Files | BlackBerry Encrypted Data File | Research In Motion BlackBerry Desktop Manager | BlackBerry |
.REN | Unknown Developer | Uncommon Files | Renamed File | Unknown Software | Unknown Developer |
.REP?FB_XD_FRAGMENT= | Unknown Developer | Uncommon Files | Unknown File Type | Unknown Software | Unknown Developer |
.REQ | Open Source | Uncommon Files | SSL Certificate Request File | Microsoft Exchange Server | Microsoft Corporation |
.REQW | Unknown Developer | Uncommon Files | Unknown File Type | Unknown Software | Unknown Developer |
.RESONANCEI | Unknown Developer | Uncommon Files | Uncommon File Extension | Unknown Software | Unknown Developer |
.RESOURCESC | Unknown Developer | Uncommon Files | Uncommon File Extension | Unknown Software | Unknown Developer |
.RETURNTOOL | Unknown Developer | Uncommon Files | Uncommon File Extension | Unknown Software | Unknown Developer |
.RFB | Siber Systems | Uncommon Files | RoboForm Bookmark File | RoboForm | Siber Systems |
.RFC1896 | Unknown Developer | Uncommon Files | Uncommon File Extension | Unknown Software | Unknown Developer |
.RFP | Siber Systems | Uncommon Files | RoboForm Passcard File | RoboForm | Siber Systems |
.RFT | Autodesk, Inc. | Uncommon Files | Revit Family Template File | AutoCAD Architecture | Autodesk, Inc. |
.RFX | Unknown Developer | Uncommon Files | TouchStar License | Unknown Software | Unknown Developer |
.RGR | Unknown Developer | Uncommon Files | Uncommon File Extension | Unknown Software | Unknown Developer |
.RHC | RLIB Software | Uncommon Files | ClipX RLIB RHELP Source File | ClipX RLIB RHELP Source File' | RLIB Software |
.RHT | Unknown Developer | Uncommon Files | Unknown File Type | Unknown Software | Unknown Developer |
.RIDEOFVALK | Unknown Developer | Uncommon Files | Uncommon File Extension | Unknown Software | Unknown Developer |
.RII | Unknown Developer | Uncommon Files | Uncommon File Extension | Unknown Software | Unknown Developer |
.RJS | Yukihiro “Matz” Matsumoto | Uncommon Files | Ruby Javascript File | Notepad++ | Don Ho |
.RKA | Malcolm Taylor | Uncommon Files | RK Audio Compressed Data File | RKau, | Malcolm Taylor |
.RLA | Wavefront Technologies | Uncommon Files | Alias/Wavefront Image File | XnView MP | XnSoft |
.RLU | Unknown Developer | Uncommon Files | Unknown File Type | Unknown Software | Unknown Developer |
.RMF | Valve | Uncommon Files | Hammer Rich Map Format | Valve Hammer Editor | Valve |
.RML | Autodesk, Inc. | Uncommon Files | Redline Markup Language File | Volo View | Autodesk, Inc. |
.RND | Symantec Corporation | Uncommon Files | PGP Random Seed File | Pretty Good Privacy (PGP) | Symantec Corporation |
.ROADS | Unknown Developer | Uncommon Files | Unknown File Type | Unknown Software | Unknown Developer |
.ROM | Various Developers | Uncommon Files | Read Only Memory Image | Basilisk II | Open Source |
.RPG | Open Source | Uncommon Files | Programming Language Source Code File | RPG Toolkit | Open Source |
.RPNM | Pierre-Emmanuel Gougelet | Uncommon Files | Portable Image Image File | XnView MP | XnSoft |
.RPP | Cockos Incorporated | Uncommon Files | REAPER Project | REAPER | Cockos Incorporated |
.RPSS | Unknown Developer | Uncommon Files | Uncommon File Extension | Unknown Software | Unknown Developer |
.RPST | Unknown Developer | Uncommon Files | Uncommon File Extension | Unknown Software | Unknown Developer |
.RPTDOCUMEN | Unknown Developer | Uncommon Files | Uncommon File Extension | Unknown Software | Unknown Developer |
.RPTTEMPLAT | Unknown Developer | Uncommon Files | Uncommon File Extension | Unknown Software | Unknown Developer |
.RPU | Unknown Developer | Uncommon Files | Uncommon File Extension | Unknown Software | Unknown Developer |
.RQZ | Unknown Developer | Uncommon Files | Unknown File Type | Unknown Software | Unknown Developer |
.RSA | Various Developers | Uncommon Files | RSA Certificate File | Mozilla Firefox | Mozilla |
.RTC | Brain Innovation | Uncommon Files | BrainVoyager QX Design Matrix File | BrainVoyager QX | Brain Innovation |
.RTM | Unknown Developer | Uncommon Files | Real Tracker Module | Real Tracker | Unknown Developer |
.RTP | KTH Royal Institute of Technology | Uncommon Files | Gromacs Residue Topology Parameter File | Gromacs | KTH Royal Institute of Technology |
.RTX | The Document Foundation | Uncommon Files | Rich Text Document | LibreOffice | The Document Foundation |
.RU) | Unknown Developer | Uncommon Files | Unknown File Type | Unknown Software | Unknown Developer |
.RV2 | Unknown Developer | Uncommon Files | Uncommon File Extension | Unknown Software | Unknown Developer |
.RWJ | Unknown Developer | Uncommon Files | Unknown File Type | Unknown Software | Unknown Developer |
.RWZ | Microsoft Corporation | Uncommon Files | Outlook Rules Wizard File | Microsoft Outlook 2016 | Microsoft Corporation |
.RXC | Sonic Solutions | Uncommon Files | Roxio Certificate File | Roxio Creator NXT Pro 6 | Roxio |
.RYS | Piotr Fusik | Uncommon Files | Mamut Picture Image File | Recoil | Piotr Fusik |