What they lack, however, is deeper support for users on different servers (at least I couldn’t find any). Part of the appeal of Gitter is that it syncs with GitHub: kick someone off your team there, they’ll lose they rights in the Gitter channels etc. If I’m connected using another Matrix server however, there’s no connection to my GitHub account. So while one can obviously chat using this other Matrix server, there are no benefits of Gitter over just opening a room on some random Matrix server anymore.