I really wish Jitsi had taken off during lockdowns. MS Teams I can understand, businesses all use Microsoft, but Zoom is just vile shite.
Jitsi has done a lot to improve functionality since lock down. Still pretty basic, but it’s free and can do moderation.
BBB (Big Blue Button, for those unfamiliar) seems to be the favorite of lots of institutions in Germany. I think a government agency recommended its use, that’s why it’s so widespread.
they use https://github.com/meetecho/janus-gateway as the webrtc backend, at least according to https://opentalk.eu/en/open-source-code-und-community. so the rust part is probably just for chat and signaling.