and its not linux or mac

Except there’s already a Mac version of GOG Galaxy.

This clearly isn’t true though, otherwise there wouldn’t be so much FOSS software.

I like what GOG do, but gating features, even niche ones, behind a subscription sounds like the first step towards enshittification.

Also, I’m sure as hell not giving them extra money until they fix their platform on Linux/Steam Deck.

https://en.wikipedia.org/wiki/List_of_free_and_open-source_software_packages

Buy never software