| gfe | Glary Utilities Encrypted File |
| gff | General Feature Format File |
| gff | NimbleGen GFF Report Data |
| gff | SignalMap Gene-Finding Format Data |
| gff3 | Generic Feature Format v3 Data |
| gfh | Altair FEKO Green Magnetic Field Strengths Data |
| gfi | Genigraphics Graphics Link Presentation |
| gfl | GeForms Data |
| gfr | FusionSeq Gene Fusion Report |
| gfs | Glarysoft Split Data |
| gfs | Immersioni Profile |
| gft | GSP Family Tree Data |
| gft | Torque Font Cache |
| gfv | GfsView Data |
| gfx | FactoryTalk View Display Data |
| gfx | RSView Machine Edition Graphics Display Data |
| gfx | ScaleForm GFx Data |
| gfx | Sierra Print Artist Data |
| gfy | Grafical 1.0 Data |
| gg | Google Desktop Gadget |
| gg | Gridgen Data |
| gg1 | Gerber Drill Guide Data |
| gg2 | Gerber Drill Guide Data |
| gg3 | Gerber Drill Guide Data |
| ggc | Google Desktop Gadget Container |
| ggd | GASTAR Gridded Concentration Data |
| ggd | Zemax Grid Gradient Index Data |
| ggm | Green Globs and Graphing Equations Saved State |
| ggn | ABB HTS500 Saved Job |
| ggp | GemCom GEMS Graphics Data |
| ggp | Global Geodynamics Project Data File |
| ggs | NO$GBA Gameboy Emulator Data |
| ggz | Garena Client Skin |
| gh5 | Mplus GH5 Data |
| ghash | Gizmo Central Hash Data |
