[kofu]

This one is often overlook but very good, I prefer it over Jitsi https://galene.org/

[internet_points]

what are the minimal server requirements? jitsi says prefer 8G ram (4G for small meetings) and 4 dedicated cpu cores https://jitsi.github.io/handbook/docs/devops-guide/devops-gu...

The chat seems extremely basic, so not really an alternative if you need chat with e.g. message edit/delete/formatting/pictures as well as video/audio.