Yes https://revolt.chat/ is run by quite young Devs, but they are trying, but it is going very slowly, I have been watching their progress for the last 2 years, and it seems to be slowing down at the moment, they seem stuck on the VoIP side of things because the rest is easy, I am hoping they might get some help at some point. That's all I can really say on that them and I wish them the best as they seem to be the only ones trying. I'd love to help them with the Mumble side of things but different code languages, so I can not just give them any of my old source code, let's see how they get on I guess. I still think Cloudron should try to do a deal with Zello because it is the same concept as Mumble, plus text and file sharing, Yet another company making it easy to use Mumble just like Discord, that's all it boils down to with the last of the chat rooms/channels. Many thanks. 😉