Is there a web conferencing app to replace Google Hangouts?

Question

Google

Hello! This question: there was a need for a conference, participants - from 5 to 30 people. Requirements: audio communication + video (video is enough for only 1-3 participants, everyone else is just with sound) and the ability to jointly edit a document by all participants in the conference. It is desirable that all this be in one window.

Answer 1

https://www.g2crowd.com/categories/web-conferencing
https://en.wikipedia.org/wiki/Comparison_of_web_co...

Answer 2

Get yourself a Jitsi Meet on a $5 DigitalOcean instance. Document co-authoring is enabled. One window, yes.
Test
Jitsi Meet Github