Compare software

ejabberd vs MongooseIM: catalog facts
ejabberd	MongooseIM
Free Free and open source.	Free Free and open source.
Linux, Self-hosted	Self-hosted
XMPP, MQTT and SIP in one server Over 400 XMPP extensions supported	Clusters across multiple machines Fault tolerant Erlang design
More complex than servers built for small groups Erlang-based stack can be unfamiliar to admins	Aimed at large installations, which adds complexity for small setups Requires familiarity with server and cluster administration
Self-hosted	Self-hosted
Open source	Open source
License not stated	License not stated
No account needed	Not stated if an account is needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.