[scbrg]

Not sure if there's been a way to integrate separate emacs processes, but it has always been possible to launch a new frame (emacs speak for window) displaying the same buffer, and given network transparency in X, have it displayed on any remote computer running X.

[dleslie]

You can run an emacs server and operate out over ssh, if you want, sharing the buffers across many remote clients.

https://www.gnu.org/software/emacs/manual/html_node/emacs/Em...

Although if you're doing remote editing you probably want to use Tramp.

https://www.gnu.org/software/tramp/