I spend way too much time on this. It has awesome features, a good mobile UI, maaany many systems to sort things, flexible permissions and more.
Examples:
- Fedora
- KDE
- uBlue
- Tor project (they also have an onion site)
- Manjaro, EndeavorOS, Garuda
- Brave
- Nextcloud
- ZorinOS
- PrivacyGuides, Techlore
- Audacity
- Anki
- Joplin …
Well ok, I guess if it’s new to you. It’s been around a long time and most of us have seen Discourse forums. They are interesting or uninteresting depending mostly on the users and topics, rather than the software.