Jitsi - your own video conference Software

[fuu0]

https://jitsi.org/
just a webinterface - type in a meetingroom name, invite people, talk, leave, done.
No external Fonts, no Browser Plugin

Criteria

1. Every day needs;
2. Open-source and free;
3. Server-side which is suitable for common VPS;
4. You are the only who control and being responsible of your data.

[Atarity]

Added. Thanks.