Rick Moen:
...
> More to the point, Jitsi Meet (reminder: that's its correct name)
> is open source (Apache License 2.0). All it takes to run is a computer
> with adequate RAM and a public IP address.
>
> BigBlueButton also has many adherents, and is generally similar
> (including relying on WebRTC and being open source, LGPL).

https://en.wikipedia.org/wiki/Comparison_of_web_conferencing_software

lists four open source systems:

https://en.wikipedia.org/wiki/Jitsi
https://en.wikipedia.org/wiki/Jami_(software)
https://en.wikipedia.org/wiki/OpenMeetings
https://en.wikipedia.org/wiki/BigBlueButton

Anyone knows which one to choose for a smallish group (< 20 persons) ?

Regards,
/Karl Hammar