| Abbreviation | Definition |
|---|---|
| G8 | Raw graphics (one byte per pixel) plane three (PicLab) |
| GAL | Corel Multimedia Manager Gallery file |
| GAL | Gallery (Corel Multimedia Manager) |
| GAM | GammaFax Fax file |
| GB | Chinese text |
| GB | GameBoy game |
| GBL | Global definitions (VAXTPU editor) |
| GBL | Global module in Basic programs |
| GBX | Message Sniffer GBUdb snapshot file extension |
| GC1 | Golden Common Lisp 1.1 Lisp language source code file |
| GC3 | Golden Common Lisp 3.1 Lisp language source code file |
| GCD | Generic CAD Drawing format (vector) |
| GCF | Grid Cache File |
| GDF | GEOS Dictionary file |
| GDO | TrueSpectra Graphical Document Object |
| GDS | Graphic Database System file |
| GE | Config file (GEcho) |
| GE | Greek Extended |
| GED | Arts Letters Graphic Environment Document graphics file |
| GED | Arts & Letters Graphic Environment Document graphics file |