It is battle tested, standardized, widely used, have open source servers and apps, end-to-end encryption (OMEMO), self-hostable and are low on ressources and federated / decentralized.
I use it with family and friends. Conversations and blabber.im on android and Gajim on Linux. There’s also apps for windows and Apple.
Curious if anyone here use it and why, why not?
EDIT: Doh. In these Lemmy times I forgot federated. Added.
How would you compare it to Matrix? I use Matrix and have never tried XMPP.
Matrix is more like IRC or Slack/Discord with a focus on group-chats, while XMPP is more like Signal, WhatsApp or Telegram. XMPP can also do group-chats, but the current clients don’t have as much of a focus on it. Otherwise they are pretty similar, but XMPP is overall a much more mature protocol and the software has less bugs and is more performant.
I haven’t used Matrix for messaging, so take this with a grain of salt. But xmpp servers and clients seem to be lighter on resources. Matrix has more capabilities for large groups.