Services for organizing virtual training classes - are there any?

Question

Distance learning

Are there such services for conducting full-fledged online learning - ala the implementation of a "virtual class"?
For example, I and another 5-10 of my students connect in a web conference, for example, I show my desktop to the students, tell something there, show it. They look at my actions, they can ask a question by voice on the air (not in a chat) and at the same time repeat my actions on their computer after me, and they also simply perform my tasks. At the same time, I have the opportunity to go to any student on his desktop and help him, correct mistakes, etc. (ala remote desktop).
Does such a thing even exist? Tell...

Answer 1

https://bigbluebutton.org/
https://openmeetings.apache.org/