Tiny Essay Editor

InkAndSwitch: This is a simple collaborative Markdown editor built in React, with inline format preview and inline commenting. It's built on automerge and automerge-repo for CRDT-based storage and sync. It uses Codemirror for markdown editing UI, and automerge-codemirror to connect to Codemirror. https://github.com/inkandswitch/tiny-essay-editor f you visit the root domain the app will make a new doc. Or you can hit the New button. Once you have a doc, the URL will update with a doc ID. If you share that URL to another browser/device, it should sync live. Hold on to the URL if you want to come back to that doc!

Geoffrey Litt thread on using it.