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MongooseIM vs Prosody: catalog facts
MongooseIM	Prosody
Free Free and open source.	Free Free and open source under the MIT licence.
Self-hosted	Self-hosted
Clusters across multiple machines Fault tolerant Erlang design	Simple setup and low resource use Federates with other XMPP servers
Aimed at large installations, which adds complexity for small setups Requires familiarity with server and cluster administration	Requires a server and some administration Users need a separate XMPP client
Self-hosted	Self-hosted
Open source	Open source
License not stated	License: MIT
Not stated if an account is 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 October 1, 2026	Official website Full listing and sources Checked September 23, 2026

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