[relyks]

It's GNOME's font manager: https://fontmanager.github.io/

If you're using ubuntu, there's a package for it

[hobarrera]

Oh, thanks, cool.

It's designed with GNOME in mind, but not part of GNOME itself, so installing it doesn't require pulling a huge part of GNOME either, and that's a nice plus! :)

[juanpotato]

yep