Is there a service for organizing chat / voice rooms on your site?

Question

Chats

Is there a service for organizing chat / voice rooms on your site? so that users themselves organize web conferences.
some kind of hipster, trendy, cool.
here is a style like this:
https://voximplant.ru/
https://sendbird.com
https://www.messagebird.com
https://www.twilio.com/
I'm just too lazy to write all my own, because it's it has already been done a hundred times and for everyone it is on the Internet as a cloudy something there with the possibility of integration.

Answer 1

https://bigbluebutton.org/