| glsl | OpenGL Shading Language File |
| glslesf | OpenGL ES Shader Fragment Data |
| glslesv | OpenGL ES Shader Variation Data |
| gluaw | Programmer's Notepad Text |
| glut | OpenGL GLUT Library Data |
| glut2 | OpenGL GLUT Library Data |
| glut3 | OpenGL GLUT Library Data |
| gly | Uniface Glyph Data |
| glyph | Uniface Glyph Object |
| gm6 | Game Maker 6.x Data |
| gm8 | Game Maker 8 Data |
| gm81 | Game Maker 8.1 Data |
| gmd | Game Maker 4.x Data |
| gmdb | GMap.NET Database |
| gmez | GameMaker Studio Extension |
| gmf | Game Maker 3.x Data |
| gmk | Game Maker 7.x Data |
| gml | GameMaker Studio GML Script |
| gmo | GNU Gettext Machine Object File |
| gmx | GameMaker: Studio Data |
| gmz | GameMaker: Studio Complete Source |
| gnl | GNT Analyzer Result Data |
| gnt | Micro Focus COBOL Generated Code |
| go | Go Source Code |
| gobj | Geoworks Object |
| goc | GEOS GOC Source Code |
| goconvey | GoConvey Profile Data |
| goh | GEOS GOC Header |
| gorm | Gorm Interface Resource |
| gox | The Games Factory Extension Object |
| gpc | Genie Backup Manager Plugin |
| gpdsc | KEIL µVision Generator Pack Description |
| gph | Stata Graph File |
| gpi | GNU Pascal Interface. |
| gr | GX Resource Source File |
