Our group uses mumble for voice and discord for text and backup voice or external voice. The voice quality is better, free, faster on mumble. Extremely low server requirements. It technically saves chat history but as server logs, not for the client.

I think thats the old steamos. The current one is arch and isn’t quite public release yet but there are a few clones of it.

Iirc SteamOS JUST added it. So clones of it should be seeing it soon

I know it because of Half-Life 1. If your tried to connect to a network game as lan while giving a non-class c ip, it specifically mentioned class c.