Did you tried Movim? It's a web based XMPP platform. * Self-hosted (simple web application), a Docker image is available, Debian package incoming * Chatrooms

Did you tried Movim? It's a web based XMPP platform. * Self-hosted (simple web application), a Docker image is available, Debian package incoming * Chatrooms and one to one chat with file sharing, embeded pictures, administration, discoverability, message editing, archives management, synchronisation between devices * Post publication in Communities and personnal accounts * Compatible with XMPP transports and services like Biboumi to bridge it with IRC * Responsive so it fit on your desktop and your mobile (the UI is also fully in sync between your devices) * Video-conferencing (one to one) * and many other things… You can check it on https://movim.eu/ https://movim.eu/ and give it a try :) P.S.: I'm the maintainer of the project