Did you had a look at Movim ? https://movim.eu/ https://movim.eu/ It offers a full social network solution (publication, comments, replies, contacts…) and mode

Did you had a look at Movim ? https://movim.eu/ https://movim.eu/ It offers a full social network solution (publication, comments, replies, contacts…) and modern IM (chatrooms, stickers, history management, synchronisation between devices). All in real-time, multi-platforms and fully built on XMPP :)