How to open GCO files

Did your computer fail to open a GCO file? We explain what GCO files are and recommend software that we know can open or convert your files.

What is a GCO file?

GCO files are Genbox Family History chart options files, which you can read more about below.

The GCO file extension indicates to your device which app can open the file. However, different apps may use the same file extension for different types of data. So a GCO opener may not be able to open all kinds of GCO files. In this case, though, we only know of one specific use.

Genbox Family History chart options

Through our analysis of GCO files, we know that one use of the format is Genbox Family History chart options. We have not yet described in detail what these files contain and what they are used for, but our team is working tiredlessly through thousands of file formats. We'd love hearing from you if you have information about the format.

We have not verified any programs yet that works with this specific format. If you know any, please use the 'Suggest a program' link below. Thanks!

GCO file openers, viewers, etc.

These apps are known to open certain types of GCO files. Remember, different programs may use GCO files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Genbox Family HistoryGenbox Family HistoryUser submitted
Repetier-HostRepetier-HostUser submitted
We have not verified any programs that we know for certain can work with GCO-files on Mac. If you know one, please use the Suggest link below and tell us about it!
We have not verified any online services that we know for certain can work with GCO-files. If you know one, please use the Suggest link below and tell us about it!