| File Extension: | GCO |
| File Type Description: | Genbox Family History Chart Options File |
| File Type Developer: | Thoughtful Creations |
| Primary Associated Software: | Genbox Family History |
| Primary Software Developer: | Thoughtful Creations |
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Primarily, a GCO file extension is a type of Genbox Family History Chart Options File file developed for the Genbox Family History software program by Thoughtful Creations. Internal website statistics show that GCO files are most popular with users in United States and those running the Windows 10 operating system. Statisically, these users are most likely running the Google Chrome internet browser.
 | Genbox Family History by Thoughtful Creations |
| Windows 10 | Windows 11 | Windows 6 | Windows 8.1 |
 | Windows |
| Extension | File Type Developer | File Category | File Type Description |
|---|---|---|---|
| .GRO | Open Source | Audio Files | Allegro MIDI File |
| .GDT | Open Source | Data Files | Gretl Data File |
| .GED | Thoughtful Creations | Data Files | GEDCOM Genealogy Data File |
| .TSZ | Cerulean Studios | Settings Files | Trillian Skin File |
| .ONETOC2 | Microsoft Corporation | Settings Files | Microsoft OneNote Table Of Contents File |
| .LVT | Open Source | Settings Files | Land Surface Verification Toolkit Configuration |
| .IDI | Hewlett-Packard | System Files | EVA Controller Event Log |
| .CNF | MySQL AB | Settings Files | MySQL Configuration File |
| .SL | SourceForge | Settings Files | Unix Software License File |
| .FIG | Open Source | Vector Image Files | Xfig Drawing |
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