| res | 4D Database Client Resource Data |
| res | Abaqus/Standard Restart Data |
| res | Qualitek-4 Results Data |
| res | SHELX Chemical Model RES Data |
| res | Steam Client Resource Data |
| res | SWAT Reservoir Input Data |
| res11 | MIKE 11 DSF Results Data |
| resbuild | ResBuild Data |
| reso | HEADTAIL Resonator Data |
| resp | IRIS RESP File |
| respack | NFE Tools Resource Pack |
| resu | Salome-Meca Exported Results Data |
| resw | Microsoft Windows Resources Data |
| resx | Payroll Mate RESX Data |
| reu | C64 REU Image |
| rev | Adobe FrameMaker Revision Data |
| rev | MetaCard Stack Data |
| rev | Workshare Synergy REV Data |
| revalver | ReValver Preset |
| revinp | OnScale Review Input Data |
| rew | MRMC State Rewards Data |
| rewi | MRMC Impulse Rewards Data |
| rex | 4D Database Client Local Data |
| rex | Oracle Database Report Definition Data |
| rez | Resume Divider Data |
| rf | Autodesk Land Desktop Rainfall Frequency Data |
| rf1 | Retirement Forecast Data |
| rf5 | Tektronix RFXpress RF5 Record Data |
| rfa | Autodesk Revit Family File |
| rfb | RoboForm Bookmark File |
| rfc | RoboForm Contact File |
| rfd | RockFlow Simulation Data |
| rfe | RockFlow Log |
| rff | Roproc Format File Data |
| rfg | iNTEGRATOR Data |
