I'm a NeoVim user and would like to be able to collaborate in real time with users of other editors, ala pair programming. I am aware of Floobits which is a proprietary system that includes plugins for various editors. In fact I've used it before and really liked it, but I have two use cases right now: one that requires all software stays in-house so I need a self-hosted solution and others that are FOSS projects with no budgets.
The closest Open Source alternative I've run across is the MIT licensed Firepad which uses a Firebase backend to synchronize edits between users. There is a plugin for Atom which seems to enable those guys to work on the same file in real time but I don't see any plugins for NeoVim users like myself to join the party.
My requirements are an open-source system that can be used independently of a third party, and there has to be plugins for (or a way to hack) at least NeoVim and Atom Editor. Bonus points for Sublime Text and browser-based editors being added to the mix.
I do not care about how the protocol works. I can have all the systems on the same VPN so it could presume a local network, or some internet based protocol is fine.
