I often use the web service Kobra.io, in which we can edit a specific file with some people together at the same time.
Is there such a package on Emacs?
I'd like to edit a specific lisp code at the same time with some people.
If I change some parts in the code, the other people can see the change at the same time.
Could you tell me how to implement this function?
I'd appreciate your help.