I've wanted something like this for a long time and finally built it over the weekend after seeing a tweeet about LLM memory. Perchpad is a collaborative real-time Markdown editor where your workspace is just a folder of flat .md and .csv files, version-controlled with Git.

Key things:

Git-native storage, your workspace is plain files. git clone them, download as zip, or just edit locally. No proprietary format lock-in.

Deep LLM support. hook it up to Claude as persistent memory/context. The LLM integration is fairly capable for drafting and editing within docs.

Web based real-time multiplayer – full collaborative editing, multiple cursors, the usual.

Text-to-speech longform read-aloud with decent voice options.

The idea is that your notes and docs should be portable plain text first, collaborative second, and AI-augmented third — not the other way around. Would really appreciate any feedback. Happy to answer questions here.

https://perchpad.co