Jitsi works great for me. Just know that using it with Firefox is not optimal, particularly for > 2 participants due to certain bandwidth optimizations not being available on Firefox. This pains me as a Firefox user.
Observed that firefox 47 and 60 clients kill the stream for all participants. firefox 68 works fine. Not sure why a client failure would cause a crash on the server but it's not a great experience.
best alternative i've seen so far was a webrtc setup with okta authentication. https://github.com/rdegges/chatapp