.R | Open Source | Utvecklarfiler | R Script File | Microsoft Windows Media Player | Microsoft Corporation |
.R8 | Unknown Developer | Kamera raw-filer | RAW Graphics File | Microsoft Flight Simulator | Microsoft Corporation |
.R82 | Microsoft Corporation | Grafikfil | Flight Simulator Texture File | Microsoft Flight Simulator | Microsoft Corporation |
.RAF | Fuji Xerox | Kamera raw-filer | Fuji RAW Image File | ACD Systems Canvas | Microsoft Corporation |
.RAT | World Wide Web Consortium (W3C) | Mindre vanliga filer | PICS Rating File | Microsoft Notepad | Microsoft Corporation |
.RATDVD | RatDVD | Diskimage filer | RatDVD Disk Image | Microsoft Windows Media Player | Microsoft Corporation |
.RAW | Unknown Developer | Kamera raw-filer | Raw Image Data File | Microsoft Windows Photos | Microsoft Corporation |
.RB | Larian Studios | Spelfiler | Divinity: Original Sin Game Data | Visual Studio Code | Microsoft Corporation |
.RBF | Microsoft Corporation | Backupfiler | Windows Installer Rollback File | Windows Installer | Microsoft Corporation |
.RBK | Microsoft Corporation | Backupfiler | Windows 95 Registry Backup File | Microsoft Configuration Backup Tool | Microsoft Corporation |
.RBS | Microsoft Corporation | Backupfiler | Windows Installer Rollback Script File | Windows Installer | Microsoft Corporation |
.RC | Angus Johnson | Utvecklarfiler | Resource Script File | Microsoft Visual Studio | Microsoft Corporation |
.RC2 | Microsoft Corporation | Utvecklarfiler | Visual Studio Resources File | Microsoft Visual Studio | Microsoft Corporation |
.RC3 | Microsoft Corporation | Utvecklarfiler | Vc98/Visual C Resource File | Microsoft Visual C++ | Microsoft Corporation |
.RCC | Angus Johnson | Utvecklarfiler | Resource Script File | Microsoft Visual Studio | Microsoft Corporation |
.RCJ | Microsoft Corporation | Textfiler | Robocopy Job File | Microsoft Notepad | Microsoft Corporation |
.RCT | Microsoft Corporation | Inställningsfiler | Visual Studio Resource Template | Microsoft Visual Studio | Microsoft Corporation |
.RC_ | Microsoft Corporation | Datafiler | Microsoft WinHelp Compressed Help Document | Microsoft Windows Help | Microsoft Corporation |
.RDF | Unknown Developer | Inställningsfiler | Resource Description Framework File | Microsoft Excel | Microsoft Corporation |
.RDG | Microsoft Corporation | Inställningsfiler | Microsoft Remote Desktop Connection Manager Configuration | Microsoft Remote Desktop Connection | Microsoft Corporation |
.RDP | Microsoft Corporation | Inställningsfiler | Remote Desktop Configuration File | Microsoft Remote Desktop Connection | Microsoft Corporation |
.REA | Microsoft Corporation | Textfiler | Readme Text File | Microsoft Notepad | Microsoft Corporation |
.README | The Document Foundation | Textfiler | Readme Text Document File | Microsoft Notepad | Microsoft Corporation |
.REFERENCE | Budget In Brief | Datafiler | Budget In Brief Reference File | Microsoft Notepad | Microsoft Corporation |
.REG | Microsoft Corporation | Systemfiler | Registry File | Windows Registry Editor | Microsoft Corporation |
.RELS | Microsoft Corporation | Sidlayoutfiler | Open Office XML Relationships File | Microsoft Excel | Microsoft Corporation |
.REPORT | Sublime HQ Pty Ltd | Datafiler | Report File | Microsoft Notepad | Microsoft Corporation |
.REQ | Open Source | Mindre vanliga filer | SSL Certificate Request File | Microsoft Exchange Server | Microsoft Corporation |
.RES | Valve | Inställningsfiler | Valve Resource File | Microsoft Visual Studio | Microsoft Corporation |
.RESJSON | Microsoft Corporation | Utvecklarfiler | Microsoft Windows 8 Metro JavaScript File | Microsoft Windows 8 | Microsoft Corporation |
.RESMONCFG | Microsoft Corporation | Inställningsfiler | Microsoft Windows Resource Monitor Settings | Microsoft Resource Monitor | Microsoft Corporation |
.RESOURCES | Microsoft Corporation | Utvecklarfiler | Microsoft Visual Studio Resource | Microsoft Visual Studio | Microsoft Corporation |
.RESTORELIST | Microsoft Corporation | Systemfiler | Microsoft Windows File System Permission | Microsoft Windows | Microsoft Corporation |
.RESW | Microsoft Corporation | Utvecklarfiler | Microsoft Windows 8 Resources File | Microsoft Windows 8 | Microsoft Corporation |
.RESX | Microsoft Corporation | Utvecklarfiler | .NET Managed Resources File | Microsoft Visual Studio | Microsoft Corporation |
.RGB | Silicon Graphics, Inc. | Rasterbildfiler | RGB Bitmap | ACD Systems Canvas | Microsoft Corporation |
.RGE | Microsoft Corporation | Datafiler | Entourage File Archive | Microsoft Outlook 2016 | Microsoft Corporation |
.RGS | Microsoft Corporation | Exekverbara filer | Registry Script | Microsoft Visual Studio | Microsoft Corporation |
.RH | Microsoft Corporation | Utvecklarfiler | C++ Resource Header Data | Microsoft Visual C++ | Microsoft Corporation |
.RHTML | Yukihiro “Matz” Matsumoto | Webbfiler | Ruby HTML Web Page | Internet Explorer | Microsoft Corporation |
.RJS | Yukihiro “Matz” Matsumoto | Webbfiler | Ruby Javascript File | Microsoft Edge | Microsoft Corporation |
.RL4 | Various Developers | Rasterbildfiler | Bitmap Image File | Microsoft Windows Photos | Microsoft Corporation |
.RLL | Microsoft Corporation | Inställningsfiler | Microsoft Resource Library | Microsoft Visual Studio | Microsoft Corporation |
.RMH | Microsoft Corporation | Datafiler | Rights-Managed HTML Document File | Internet Explorer | Microsoft Corporation |
.RMI | Open Source | Ljudfiler | RMID MIDI File | Microsoft Windows Media Player | Microsoft Corporation |
.RMT | The Catalina Group | Systemfiler | Router Firmware File | Internet Explorer | Microsoft Corporation |
.RPC | Synthrone | Sidlayoutfiler | Rich Page Content Document | Microsoft Visual Studio | Microsoft Corporation |
.RPT | SAP | Datafiler | Crystal Reports File | Microsoft Visual Studio | Microsoft Corporation |
.RPY | Team Shanghai Alice | Spelfiler | Touhou Project Replay File | Microsoft Notepad | Microsoft Corporation |
.RRA | Iterum, LLC | CAD filer | vRigger Rigging Gear File | Windows Installer | Microsoft Corporation |
.RRT | ALTAVENTE | Datafiler | Rhapzode Resource Template | Microsoft PowerPoint | Microsoft Corporation |
.RSP | Rockwell Automation Inc. | Datafiler | RSLogix PLC Program File | Microsoft Visual Studio | Microsoft Corporation |
.RST | David Goodger | Textfiler | ReStructuredText File | Microsoft Notepad | Microsoft Corporation |
.RTC | Brain Innovation | Datafiler | BrainVoyager QX Design Matrix File | Internet Explorer | Microsoft Corporation |
.RTE | Autodesk, Inc. | Datafiler | Revit Project Template | Microsoft Exchange Server | Microsoft Corporation |
.RTF | Microsoft Corporation | Textfiler | Rich Text Format File | Microsoft WordPad | Microsoft Corporation |
.RTL | Hewlett-Packard | Rasterbildfiler | Raster Transfer Language File | Microsoft Notepad | Microsoft Corporation |
.RTP | KTH Royal Institute of Technology | Datafiler | Gromacs Residue Topology Parameter File | MS-DOS | Microsoft Corporation |
.RTX | The Document Foundation | Textfiler | Rich Text Document | Microsoft Word | Microsoft Corporation |
.RT_ | Microsoft Corporation | Datafiler | Microsoft WinHelp Compressed Help Document | Microsoft Windows Help | Microsoft Corporation |
.RU | Microsoft Corporation | Textfiler | Russian Text Or Localization File | Microsoft Notepad | Microsoft Corporation |
.RUF | Samsung Electronics | Systemfiler | Samsung DVD And Blu-ray Player Firmware File | Windows Built-in USB Drive Software | Microsoft Corporation |
.RULESET | Microsoft Corporation | Inställningsfiler | Visual Studio Code Analysis Rule Set | Microsoft Visual Studio | Microsoft Corporation |
.RV | Astronomical Institute of the Czech Academyof Sciences | Datafiler | SPEFO Stellar Spectra Analysis Data | Microsoft Windows Media Player | Microsoft Corporation |
.RWD | NRG Systems | Datafiler | NRG Raw Wind Data File | Microsoft Flight Simulator | Microsoft Corporation |
.RWZ | Microsoft Corporation | Mindre vanliga filer | Outlook Rules Wizard File | Microsoft Outlook 2016 | Microsoft Corporation |
.RX | Microsoft Corporation | Systemfiler | MS-DOS 7 Data | Microsoft Windows | Microsoft Corporation |