Today I tried #Haxial #KDX for the first time and freaking love it. How did I not hear of this 20 years ago? This is the Internet I would have preferred, not the bloated mess of web apps. Relevant links:

Dockerfile for server:
https://github.com/patthiel/docker-kdx-server

Clients/Info:
https://kdx.technowiki.info/

Screenshots, history, & more:
https://erb.pw/projects/hotline-kdx/

Chat integrates with IRC and has a voice channel. So, Discord except good.

Note: I'm running the old Windows client with Wine here. There's a Linux client but but old dependencies abound and I haven't had coffee yet.