Online editor for collective work on code (or text)

Found just now, I hasten to share. It is worth it to try and then use in collaboration.
So, click here , in the upper right corner click “New Document”, and enter or paste the code. Then the fun begins! A link from the address bar is sent to a friend, and he will see our code in the browser. From this point on, you can edit simultaneously together, all changes will be reflected almost immediately.

Convenient - there is a highlight of different languages, even python. It seems to me that it is more convenient to do this together with the messenger, while agreeing on edits along the way.

Thing.