Prosemirror might be a good starting point for a headless collaborative rich text environment. It manages rich texts state and is collaborative out of the box.

Prosemirror might be a good starting point for a headless collaborative rich text environment. It manages rich texts state and is collaborative out of the box. https://prosemirror.net/examples/collab/#edit-Example https://prosemirror.net/examples/collab/#edit-Example