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MongooseIM vs Tigase XMPP Server: catalog facts
MongooseIM	Tigase XMPP Server
Free Free and open source.	Freemium Open-source server, with paid plans and support offered by Tigase.
Self-hosted	Self-hosted
Clusters across multiple machines Fault tolerant Erlang design	Built on the open XMPP standard Designed for large numbers of users
Aimed at large installations, which adds complexity for small setups Requires familiarity with server and cluster administration	Requires server administration knowledge to deploy and run Website is aimed at businesses buying support
Self-hosted	Self-hosted
Open source	Open source
License not stated	License not stated
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 October 1, 2026

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