| pps | ArcInfo Processing Set Codes Data |
| pth | VisualGPS XP Path Data |
| pxy | Topocad Coordinate Data |
| qal | OpenMap Quality Data |
| qc3 | Quick Chart 3 Map |
| qgis | Quantum GIS Project |
| qgl | QGis Symbology Data |
| qgs | Quantum GIS Project |
| qgz | Quantum GIS Compressed Project |
| qlr | QGis Layer Definition Data |
| qly | Carlson SurvCE Backup Data |
| qmp | SeeYou Raster Map |
| qpj | QGIS Shapefile |
| qsz | QPS Fledermaus Shared Scene Archive |
| qu2 | QuoVadis Database |
| qu3 | QuoVadis Database |
| qu4 | QuoVadis Database |
| qv5db | QuoVadis v5 Database |
| qvr | LP360 LAS Pyramiding Data |
| rd5 | Survey Pro Road Alignment Data |
| rdc | Idrisi Raster Format Description |
| rde | ArcGIS Reduced Resolution Dataset External File |
| ref | Idrisi Raster Format Geographical Reference |
| rik | Swedish Grid Map |
| rlf | ArcGIS Report Layout File |
| rlk | TNTmips Link File |
| rmap | CompeGPS Raster Map |
| rnf | Carlson SurvCE Road Network Data |
| rrd | ArcGIS Reduced Resolution Dataset File |
| rst | Idrisi Raster Format RAW Image |
| rtcm | RTKLIB RTCM Data |
| rte | OziExplorer Route Data |
| rtkt | GeoVisu Downloaded Royaltek Tracklog |
| rtmap | CompeGPS TwoNav Overview Layer |
| rtx | Bike GPS RichTrack Data File |
