| grr | Gradekeeper Class Roster |
| grs | Esko Automation Engine Graphics Data |
| grs | Getright Skin |
| grt | Esko Automation Engine Tiles Data |
| grt | Grapher Template |
| grt | MegaHAL Greeting Data |
| gru | FXpansion GURU Preset |
| grv | CART Grove Data |
| grv | Esko Automation Engine View Data |
| grv | Microsoft Office Groove File |
| grv | PTC Creo Mill Grooving Parameter Data |
| grx | Getright Exported List |
| grxml | XML Grammar File |
| gs | GemStone Document |
| gs | Magellan eXplorist Geocache Waypoint Data |
| gs-bck | Genius Scan Backup Data |
| gs0 | Kega Fusion Genesis Quick Slot 0 Save Data |
| gs1 | Genecyst Emulator Saved State |
| gs2 | Genecyst Emulator Saved State |
| gs3 | GameStarter File |
| gs3 | Genecyst Emulator Saved State |
| gs4 | Genecyst Emulator Saved State |
| gs5 | Genecyst Emulator Saved State |
| gs6 | Genecyst Emulator Saved State |
| gs7 | Genecyst Emulator Saved State |
| gs8 | Genecyst Emulator Saved State |
| gs9 | Genecyst Emulator Saved State |
| gsa | FXpansion Geist2 Slice Information Data |
| gsa | GeneStudio Alignment Data |
| gsb | FME Desktop Grid Shift Data |
