| rdg | RDCman Configuration File |
| rdi | Red Dragon ISecure Settings Data |
| rdoc_options | Ruby RDoc Document Options |
| rdp | Remote Desktop Connection Settings Data |
| reap | WebReaper Profile |
| reg | NorPix StreamPix Configuration |
| reminders | Remind Reminder Script |
| repatch | DCAM EnvShaper Effect Preset |
| repo | Yum Package Repository Configuration |
| resmoncfg | Resource Monitor Configuration |
| rez | FirstClass Resource Data |
| rfi | BlackBerry Email Filter |
| rfw | Reflection FTP Settings |
| rhs | Iconyx BeamWare Setup Parameters Data |
| rin | RappInfo PostScript Converter Configuration |
| rkr | Rakarrack Presets Data |
| root | Bind Root Nameservers Configuration |
| rprofile | R Startup Configuration |
| rps | Autodesk 3D Studio MAX Render Preset Settings |
| rset | Extensions Manager RSET Data |
| rsp | ODBC Driver Configuration |
| Oracle Universal Installer Response Data |
| rsuser | Microsoft SQL Server Report RSUser Data |
| rsx | RSLinx Configuration Data |
| rtax | RTA Gateway Exported Configuration |
| rto | Rumba File Transfer Profile |
| rub | JQuery Rules Data |
| ruleset | Visual Studio Code Analysis Rule Set |
| rvs | Lattice Reveal Analyzer Settings |
| s00 | Roland V-Synth Settings Data |
| s2c | Spike2 Configuration Data |
| s2cx | Spike2 v7 Configuration Data |
| sall | SimplySync Backup Configuration |
| sam | LMHOSTS Sample Data |
| samrc | SAM Default Parameters Data |
| sasf | Android Settings of Accessibility Data |
| sbs | Substance Designer Substance Package |
| sbsprs | Substance Designer Presets Data |
| scacfg | SuperCard Application Configuration |
| scc | Active ScreenSaver Builder Configuration |
| scf | Lotus Symphony SpellChecker Configuration |
| schemas | Amaya Schemas Configuration |
| scheme | Sothink Logo Maker Color Scheme |
| scpcfg | SuperCard Project Configuration |
| scpresets | Snap Converter Presets Data |
| scr | EAGLE Settings Data |
| sdc | Smart Diary Suite Configuration |
| sde | ArcSDE Connection File |
| MediaMonkey Equalizer Presets Data |
| sdg | OpenOffice.org Configuration File |
| Smart Diary Suite Graph Configuration |
| seb | Safe Exam Browser Configuration |
| security | Java JRE Security Settings Data |
| securitysettings | Alpha Five Web Security Settings |
| sed | IExpress Self Extraction Directive Data |
| set | General Settings File |
| SmartCAM Connection Settings File |
| settings | Fusion Settings Data |
| General Configuration |
| sfpreset | Sony Preset Manager Preset |
| sfs | Sibelius Configuration File |
| sgc | Secure SnapGear Router Configuration |
| shed | Shed Configuration |
| shi | Simple Help Editor Settings |
| shortcut | Asutype Shortcut Data |
| sif | Windows NT Setup Information File |
| siz | Oracle 7 Configuration Data |
| skt | Lightwave 3D Skytracer Settings |
| sldreg | SolidWorks Saved Settings |
| slip | Embarcadero License Configuration |
| sll | SpectraLayers Pro Layout Settings |
| slt | K-Meleon Browser Settings Data |
| smartftp | SmartFTP Configuration Data |
| smn | SetEdit Menu Configuration |
| smprf | System Mechanic Windows Startup Profile |
| smr | Smedge2 Job Settings |
| snagprof | SnagIt Profile Data |
| sno | Starry Night Pro Presets |
| sob | OpenOffice.org Configuration File |
| soc | OpenOffice.org Configuration File |
