| 1. | G | Paradox file APPLAUSE data chart |
| 2. | G16 | GoldED for DOS compiled config |
| 3. | G3 | |
| 4. | G8 | Cubicomp PictureMaker green channel image data (24bit 3D animation) PicLab raw graphics (one byte per pixel) |
| 5. | GAL | Corel Multimedia Manager Album Hewlett-Packard Graphics GALlery |
| 6. | GAM | |
| 7. | GB | Chinese text Gameboy game |
| 8. | GBL | GloBaL module in Basic program VAXTPU editor GloBaL definitions |
| 9. | GBR | |
| 10. | GC1 | Golden Common Lisp 1.1 source code file |
| 11. | GC3 | Golden Common Lisp 3.1 source code file |
| 12. | GCD | Generic CAD Drawing format (vector) |
| 13. | GDF | |
| 14. | GDS | |
| 15. | GE | |
| 16. | GED | Wicat image GoldED for DOS compiled config file Graphics (Graphic Environment Document) (Arts & Letters) EnerGraphics graphics editor file |
| 17. | GEF | |
| 18. | GEM | Ventura Publisher vector image (Graphics Environment Manager, Digital Research GEM metafile) |
| 19. | GEN | Compiled template (dBASE Application Generator) Ventura Publisher GENerated text file |
| 20. | GEO | VideoScape 3D object GoldED for OS/2 compiled config file Geoworks Geode (GEOS executable) |