| Abbreviation | Definition |
|---|---|
| GFTS | Generations Family Tree Software |
| GG | Geek Gadgets |
| GGAG | Good Governance Advisory Group |
| GGE | Google Gadgets Editor |
| GGEP | Gnutella Generic Extension Protocol |
| GGI | GATE Graphical Interface |
| GGS | General Graphics System |
| GGS | Good Games |
| GGS | Gopher Gulch Software |
| GGSD | Geotechnical and Geoenvironmental Software Directory |
| GGSS | GEONS Ground System Software |
| GGTS | Groovy/Grails Tool Suite |
| GHC | Glasgow Haskell Compiler |
| GHC | Guarded Horn Clauses |
| GHOST | General Haptics Open Software Toolkit |
| GHOST | General Hardware Oriented Software Transfer |
| GHOSTS | Genealogy Helper And Organizer Search And Tracking Software |
| GHOSTS | Genealogy Helper Open Source Tracking Software |
| GHU | Gnome Hamradio Utilities |
| GI | Global Illumination |