| gdiagramstyle | OmniGraffle Diagram Style |
| gdl | Stanford Microarray Database GDL Data |
| gdlink | InSync Google Drive Link Data |
| gdo | Gerber Data Object |
| gdq | SmartWare Quick Graph |
| gdr | GRAFIK Eye Designer User Data |
| gdscript | InSync Google Drive Script Data |
| gdsp | Astound GDSP Data |
| gdt | Genbox Family History Dictionary Data |
| gdt | gINT Data Template |
| gdt | Gretl Data |
| gdt | Guitar and Drum Trainer Song |
| gdtb | Gretl Binary Data |
| gdx | GAMS Data Exchange File |
| gdx | Novapoint Triangle Model |
| gdy | Novapoint Triangle Model |
| gdyn | Gimp Dynamics File |
| gdz | Genbox Family History Initialization Data |
| ge2 | Autodesk Maya 3D GE2 Exported Data |
| ge3 | Mastercam Geometry Data |
| ge6 | WinFamily 6 Genealogy Data |
| geb | Dr. Hardware Data File |
| geb | Sybase PowerDesigner Glossary Model Backup |
| gedata | Qlucore Omics Explorer Data File |
| gee | GeeonxCreator Object Data |
| gef | Geotechnical Exchange Format File |
| gem | McAfee Antivirus Pattern Update |
| gems | Ruby Version Manager GemSet Data |
| gen | Chromeleon Generic Driver Configuration |
| gen | Linguistic Tree Constructor Generic File |
