3 ms·
sendxmpp (and its many incarnations: https://wiki.xmpp.org/web/User:MDosch/Sendxmpp_incarnations https://wiki.xmpp.org/web/User:MDosch/Sendxmpp_incarnations ) i
by MattJ100 5y ago
sendxmpp (and its many incarnations: https://wiki.xmpp.org/web/User:MDosch/Sendxmpp_incarnations https://wiki.xmpp.org/web/User:MDosch/Sendxmpp_incarnations ) is great.
If you prefer a hosted/HTTP option, there is also https://slickmsg.com/ https://slickmsg.com/ worth mentioning as a way to plumb stuff to XMPP.
Also many web apps use apprise, which has XMPP support.