

If you don’t need voice, there are a lot of options. Matrix has IRC support and encryption, and has voice options if you self host.
Riot is… A Discord clone without working voice and I found it to be an odd duck.
There’s RocketChat… More Slack like.
Mattermost.
I replaced my voice/video chats with Nextcloud Talk and/or Steam, based on the scenario. Outside of those, Matrix is good for community needs in my mind.



Personally, I think this first response nails it.
https://lists.ubuntu.com/archives/ubuntu-devel/2026-March/043515.html
Linux is not sold. So you either need to force users to install this on their systems, or go eat rocks.
Enterprise distros on the other hand… Need to do this.