| rrp | Vflo Precipitation Data |
| rrpa | Oracle Reports Remote Printing Utility Data |
| rrpp | Oracle Reports Remote Printing Utility Data |
| rrq | SDLX Registration Request Data |
| rrr | Registry Mechanic Backup |
| rrrx | Rhapzode Compiled Output |
| rrs4 | Remo Recover Recovery Session |
| rrt | Rhapzode Resource Template |
| rruff | RRUFF Database |
| rrw | Goldmine Report Writer Data |
| rrx | IBM Datacap Defines Data |
| rrx | Moxy Variable Rate Securities Data |
| rs7 | LightTools Radiant Source Model Data |
| rs8 | ProSource Data |
| rscn | Caligari TrueSpace Exported Scene |
| rsc_tmp | AusLogics BoostSpeed Temporary Rescue Data |
| rsd | Altair FEKO Cable Harness Geometry Data |
| rsd | RadioSure Stations Data |
| rsd | Resort Software Database |
| rsd | RuneScape Demon Data |
| rsdb | Resort Software Database |
| rsdf | RapidShare Downloader Format File |
| rsdo | Reflection Desktop Customization Rules |
| rsds | Report Server Data Source |
| rsdx | RadioSure Stations Data |
| rse | RockSim Engine Database |
| rsed | ResEdit Data |
| rsf | Lego Mindstorms EV3 Robot Sound Data |
| rsf | Reflection Desktop Settings Data |
| rsf | WAsP Resource Data |
| rsfx | Reflection Desktop Data |
| rsh | 3DCS Statistics Results Data |
| rslkey | Resilio Sync Key |
| rsls | Resilio Sync Placeholder |
| rsm | CCNA Network Visualizer Data |
