Compare software

ejabberd vs OpenSIPS: catalog facts
ejabberd	OpenSIPS
Free Free and open source.	Free Free and open source; paid training courses are offered separately.
Linux, Self-hosted	Linux, Self-hosted
XMPP, MQTT and SIP in one server Over 400 XMPP extensions supported	Handles high SIP traffic volumes Covers many roles from PBX to load balancer
More complex than servers built for small groups Erlang-based stack can be unfamiliar to admins	Steep learning curve, aimed at telecom engineers Signaling server only, not an end-user calling app
Self-hosted	Downloadable app, Self-hosted
Open source	Open source
License not stated	License: GPL-2.0
No account needed	No account 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 2, 2026

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