Yes, nowadays and in the future my eye is on element call https://github.com/element-hq/element-call

It works as well as the other corporate offerings. It does depend a bit on who's hosting it.

We tried to host it ourselves to save cost, and it's a beast but it mostly works. It certainly lags behind in features and uses a lot of resources, but when you compare with the cost it's certainly passable.

Creatove Freedom Summit (https://creativefreedomsummit.com/) are doing their events with Jitsi, seems to be working fine. Other options would be Nextcloud Talk where someone recently told me they're using it in a university setting with lots of people and BigBlueButton which is also used by universities.

It's probably the best one when it comes to web-based videocalls. I had much better experience with native apps (e.g. Mumble) when it comes to sound quality though.

Yes

I like it, but you should test it.

Follow-up question: what's the difference between Jitsi and Jitsi Meet? Also, why Java for Jitsi?

Our company uses jitsi. We had zoom before but for some reason IT decided to go with Jitsi.

I used to be a fan, unless I was doing something wrong on the website, you can only log in with proprietary software like github. You used to be able to just create a room. I realize that presents its own problems, but email should be an option.