| 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 |
|---|---|---|---|
| .GDT | Open Source | Data Files | Gretl Data File |
| .GRO | Open Source | Audio Files | Allegro MIDI File |
| .GED | Thoughtful Creations | Data Files | GEDCOM Genealogy Data File |
| .ATH | Dell Boomi | Settings Files | Alienware AlienFX Theme File |
| .JSR | HASP Online, LLC | Settings Files | Job Safety Report Definition File |
| .DMV | Adobe Systems Incorporated | Settings Files | Adobe Acrobat Catalog Data |
| .TP | SnapStream Media | Video Files | Beyond TV Transport Stream File |
| .FSS | Basta Computing | Data Files | Splitty Data Split File |
| .SPFX | Sorenson Media | Settings Files | Squeeze Presets File |
| .MEF | Microsoft Corporation | Camera Raw Files | Mamiya RAW Image |
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