I found Jitsi: https://github.com/jitsi/jitsi-meet but is a very big projects and not easy to understand.

I need some other alternative solutions, with much fewer codes, that has features like:

[1] webcam streaming

[2] audio streaming

[3] screen sharing

[4] file sharing

[5] messaging

[6] whiteboard

[7] recording

Any help is very appreciated. Thanks