| gpb | Gerber Pad Master Bottom Data |
| gpc | Money S3 Financial Exchange Data |
| gpd | Xbox360 Game Play Data |
| gpg | GnuPG Signature/Key |
| gph | Lotus 1-2-3 Graph Data |
| gph | Pro/ENGINEER User-Defined Feature Data |
| gph | PTC Creo User-defined Feature Data |
| gpi | Garmin Point of Interest Data |
| gpk | Bentley GEOPAK Coordinated Geometry Database |
| gpk | Steinberg WaveLab Audio Peak |
| gpkg | GRAMPS Data Package |
| gpl | GenePix Lab Book |
| gpl | Gimp Palette Data |
| gpm | Linger Lingrapher Graph Parameter File |
| gpml | PathVisio Graphical Pathway Markup Language Data |
| gpp | Guitar Practiced Perfectly 2 Data |
| gpp | SolidCAM Post Processor Data |
| gpr | GenePix Results File |
| gpr | Ghemical GPR Data |
| gpro | Genealogy Pro Data |
| gprop | gPhotoShow Pro Image Property Data |
| gps | BPM Studio Playlist Structure |
| gps | GOM Player Skin |
| gpscan | GrandPerspective Scan Data |
| gpt | Gerber Pad Master Top Data |
| gpt | MOPAC Graph Data |
| gpudb | GASW GPUDB Database |
| gpw | Autodesk AutoCAD Civil 3D Hydraflow Hydrographs Extension |
| gpw | Graph Paper World File |
| gpx | GPS Exchange Format Data |
