The problem with many of these is the security of them. Giving someone access to an emacs session gives them a full shell running as your account. I used rude

The problem with many of these is the security of them. Giving someone access to an emacs session gives them a full shell running as your account. I used rudel several years ago, which synchronizes changes between server/client emacs sessions, rather than sharing a single emacs session with multiple frames.