| rwd | NRG Symphonie Logger Raw Data |
| rwdat | RockWorks Data |
| rwf | Gaussian Read-Write File |
| rwf | Open Workbench Filter Data |
| rwf | ReFrame Workspace |
| rwgrd | RockWorks Grid XML Data |
| rwh | Open Workbench Highlights Data |
| rwi | RFSCAT Simulator Retrieved Wind Field Data |
| rwl | Bentley InRoads Roadway Library Data |
| rwl | Open Workbench Library Data |
| rwmod | RockWorks Model Data |
| rwmt | ReliaSoft Weibull++ MT Data |
| rwo | MATLAB Output Data |
| rwpat | RockWorks Pattern Tables Data |
| rwrpt | RockWorks ReportWorks Data |
| rws | Open Workbench Sort Data |
| rws | REDIPlus Workspace |
| rws | RenderWare Stream Data |
| rws | Retina Wireless Scanner |
| rwt | ReadWriteThink Timeline Data |
| rwv | Open Workbench View Data |
| rwx | Netscape Live 3D Data |
| rwx | RoboCell User Parts Data |
| rwz | Microsoft Outlook Rules Wizard Data |
| rx | Borland Reflex Database Driver |
| rx | MS-DOS 7.0 Data |
| rx1 | R:Base X.5 Database |
| rx2 | R:Base X.5 Database |
| rx3 | R:Base X.5 Database |
| rx4 | R:Base X.5 Database |
| rxc | Reflection X Advantage Client Starter Data |
| rxd | Reflection X Advantage Definition Data |
| rxdoc | iZotope RX Document |
| rxf | Resco Explorer Encrypted File |
| rxh | Borland Reflex Database Help Data |
