Came across this on the r/selfhosted community. Still very much in the alpha stages, but it’s already got a Docker image you can try out for yourself, or try out the demo server.
Tried it earlier today, couldn’t get the voice/video chat to work right away on my self-hosted setup but the real-time chat was very snappy. Looks promising.
Building the full stack of a functional real-time voice and video comms system as a lone dev is not a trivial undertaking.
Even if they put 40/wk or more into it, I’d still be impressed. Like I said, not impossible but these people are rare.