Hi, author of Movim there. Do not hesitate to ask me questions about the project or XMPP :)
(self hosted version is what I am considering)
I am still looking for a replacement for the old real-chat program to self hos chat rooms, but have found virtually every system since lacks these kinds of moderation tools, or they have so many bugs that they are easy to exploit and ruin a chat system when people should be banned.
I really like that you added self-hostable options after the decentralized info on the home page. Makes me want to look deeper into this.
Those are the accounts that already logged in on those pods. You can check the "currently connected" stats for real time numbers :)
FI is actually down at the moment.