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Muesli
What it is
Muesli is a collaborative Markdown editor for teams and AI agents working in the same plain .md file. Live cursors and presence show collaborators in a document, while comment threads, tracked suggestions, and append-only history with snapshots support review and change tracking. Editing tools include inline preview, source toggle, KaTeX math, Mermaid diagrams, editable tables and callouts, wikilinks, and backlinks. Claude Code, Cursor, Codex, Copilot, and Gemini CLI can work through MCP or edit the file directly. When a human is present, agent edits become suggestions for review. Guest links assign viewer, commenter, or editor access without requiring accounts. Storage options include local files, S3-compatible services such as AWS S3, Cloudflare R2, and MinIO, plus GitHub, Gitea, Forgejo, and Google Drive. Muesli is free and open source under AGPL-3.0, with web, Windows, macOS, Linux, and self-hosted options. Self-hosting uses one Docker image, but durable documents and history require Postgres and Redis.
For and against
For
- Live collaboration includes cursors, comments, and suggestions.
- Supports several AI coding agents.
- Guest links offer viewer, commenter, and editor roles.
- Available for web, desktop, Linux, and self-hosting.
Against
- Durable self-hosted documents and history require Postgres and Redis.
- CLI installer is listed for macOS and Linux; Windows uses a ZIP.
The verdict
Muesli combines collaborative Markdown editing with review tools for human and agent contributions. It is free and open source, with hosted and self-hosted options and user-selected storage.
Who it suits
Muesli suits teams that collaborate on Markdown files with people and AI agents, including those who want role-based guest links or multiple storage choices. It also supports users seeking a self-hosted option.
Plans and prices
Muesli
Service currently free · open source under AGPL-3.0
Read 2 Oct 2026 · muesli.md
On the record
- Agent review
- When a human is present in a document, agent edits become suggestions for review.muesli.md · read 2 Oct 2026
- AI agents
- Claude Code, Cursor, Codex, Copilot, and Gemini CLI can collaborate through MCP or by editing the file directly.muesli.md · read 2 Oct 2026
- CLI
- A CLI is available to install with the maker’s shell installer on macOS and Linux, with a Windows ZIP linked from releases.muesli.md · read 2 Oct 2026
- Cloud sync
- Yesmuesli.md · read 20 Sep 2026
- Real-time collaboration
- Yesmuesli.md · read 20 Sep 2026
- Data handling
- The hosted service collects account data, session data, audit logs, workspace and document metadata, connected-storage credentials, and transient request data; it says it runs no analytics or third-party trackers.muesli.md · read 2 Oct 2026
- License
- The project is open source under the AGPL-3.0 license.muesli.md · read 2 Oct 2026
- Live collaboration
- It offers live cursors and presence, comment threads, tracked suggestions, and append-only history with snapshots.muesli.md · read 2 Oct 2026
- Local file support
- Yesmuesli.md · read 20 Sep 2026
- Markdown tools
- The editor includes inline preview and source toggle, KaTeX math, Mermaid diagrams, editable tables and callouts, wikilinks, and backlinks.muesli.md · read 2 Oct 2026
- Privacy
- The hosted service says document contents remain in storage chosen by the user and are not read, mined, or used for training.muesli.md · read 2 Oct 2026
- Product
- Muesli is a real-time collaborative Markdown editor for teams and AI agents that edit the same plain .md file.muesli.md · read 2 Oct 2026
- Security
- The privacy policy states service traffic uses TLS, production access is restricted, and audit logs record security-relevant actions.muesli.md · read 2 Oct 2026
- Self-hosting
- Muesli can be self-hosted with one Docker image; durable documents and history require Postgres and Redis, and sign-in can use an OIDC issuer.muesli.md · read 2 Oct 2026
- Sharing
- Role-scoped guest links support viewer, commenter, and editor access without requiring collaborators to have accounts.muesli.md · read 2 Oct 2026
- Storage integrations
- The maker lists local files, S3-compatible storage including AWS S3, Cloudflare R2, and MinIO, GitHub, Gitea, Forgejo, and Google Drive.muesli.md · read 2 Oct 2026
- Support
- The maker provides support and privacy contact by email at [email protected].muesli.md · read 2 Oct 2026
