Donationware: you must donate to use it. Not like regular optional donates.
Paid software is completely fine with RMS as long as the source is available to the users (not even to everyone) as long as you can freely redistribute the source (like RHEL before they enshittified)
https://www.gnu.org/philosophy/selling.en.html
Paid software is completely fine with RMS as long as the source is available to the users (not even to everyone) as long as you can freely redistribute the source (like RHEL before they enshittified)
https://www.gnu.org/philosophy/selling.en.html