The product I work on uses Tiptap pretty heavily, so I’ve looked into how I might implement collaborative editing just with Elixir.
Tiptap uses Yjs data structures for collaborative documents. However there’s no Elixir client so I was thinking of trying to use the y-crdt Rust package via rustler. I’d be interested to hear if you can get something like that to work.
Tiptap also has their own hosted backend for collaboration and includes live cursors/highlighting and support for threads/comments.
