I've been playing around with the idea of "Google Docs for Plaintext" and have a working (but ugly) version using the CodeMirror 6 collaboration protocol using a Elixir-based server I wrote.

The idea is to have either single pane docs for just a plain text editor or split pane docs for Markdown, AsciiDoc, Latex, etc with the editor in one pane and the rendered version in the other. Doc editing/viewing would be collaborative with sharing similar to Google Docs.

I've done some research and I haven't seen anything like this which means either I have lost my Google-fu, it is a dumb idea or nobody has thought of it (in descending likely-hood).

Anyone have thoughts? Does this seem interesting/useful?