There's an emacs plugin for it[0]. I've used it before, though only at the same network, and not over the internet. The host gives access to specific files, w

There's an emacs plugin for it[0]. I've used it before, though only at the same network, and not over the internet. The host gives access to specific files, which people connecting to the session can then edit. Host and clients maintain separate buffers, selection, etc, which are then synchronized by rudel. If you are on a shared account, it is even easier by running `(start-server)` and then connecting to it with emacsclient. The only downside is that marked regions are shared between clients. [0] https://www.emacswiki.org/emacs/Rudel https://www.emacswiki.org/emacs/Rudel