Fed.run – online collaborative Rust IDE and Markdown editor
Yjs-powered Rust editor but Replit and GitHub Codespaces already do this better.

Markdown editor adding real-time chat trees, but Discord already owns this space.
Small teams, open source communities, technical writers
Discord · Notion · Slack
Trees are a collection of leafs (documents) that can contain anything from regular collaborative documents to real-real-time chats (try it out to see the real-real-time aspect of it).
With this, anyone can now create a simple discord-like community (like in the main linked example), but there are other possible use cases, like - chapters in a book, collection of related documents, ...
You don't need an account to try this out (or to use Kraa in general). We would love to know what you think!
Yjs-powered Rust editor but Replit and GitHub Codespaces already do this better.
Markdown report patterns that dodge HTML token bloat for LLM workflows.
Three-way merge for docs is clever, but Notion and GitBook already own collaborative editing.
Another AI document editor when Notion, Coda, and Craft already solve this.
Markdown-defined workflows with agentic state management, but chat-with-LLM for documents is crowded.
Live markdown without Git friction, but Notion, HackMD, and Obsidian already do this.