Muesli

Free plan APILinuxMacSelf-hostedWebWindows

What Muesli is

Muesli is a collaborative Markdown editor where teams and AI agents can work together in the same plain .md file. Live cursors, presence, comment threads and tracked suggestions support shared editing, while append-only history and snapshots keep a record of changes. The editor includes inline preview, a source toggle, KaTeX math, Mermaid diagrams, editable tables and callouts, wikilinks and backlinks. Claude Code, Cursor, Codex, Copilot and Gemini CLI can participate through MCP or by editing the file directly; when a human is present, agent edits become suggestions for review. Guest links offer viewer, commenter or editor access without requiring accounts. Storage options include local files, S3-compatible services, 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. The hosted service says document contents stay in user-chosen storage and are not used for training.

Who it suits

Muesli suits teams and AI-agent users who want to collaborate on Markdown files, with options for hosted or self-hosted work. It may also suit people who want guest access without requiring collaborators to create accounts.

What it does well

Live cursors and tracked suggestions support collaboration.
Agents can work through MCP or direct file edits.
Guest links provide three access roles without accounts.
Free and open source under AGPL-3.0.

What to know first

Durable self-hosted documents and history require Postgres and Redis.
The CLI installer is for macOS and Linux; Windows uses a ZIP.
Hosted service collects account, session and workspace data.

Plans

Plan	Billed and limits	Price
Muesli	Service currently free · open source under AGPL-3.0	Free

As muesli.md lists them, read 2 Oct 2026. The maker's own page has the final word.

Getting started

Open the Muesli website in a browser, or choose a supported desktop or self-hosted option.
Choose a storage option, such as local files, a supported cloud service, or a connected repository.
Invite collaborators with a viewer, commenter, or editor guest link.
For command-line use, install the CLI with the shell installer on macOS or Linux, or use the Windows ZIP linked from releases.
For self-hosting, use the Docker image and configure Postgres and Redis for durable documents and history.

Verdict

Muesli combines Markdown editing, collaboration and agent participation with several storage choices. Its free open-source offering includes self-hosting, though durable self-hosted documents and history need Postgres and Redis.

Questions

How much does Muesli cost?

Muesli is free. Its listed plan is free.

Is Muesli open source?

Yes. The project is open source under the AGPL-3.0 license.

Which platforms does Muesli support?

Muesli supports web, Windows, macOS, Linux, and self-hosting.

Can people collaborate without accounts?

Yes. Guest links can grant viewer, commenter, or editor access without requiring collaborators to have accounts.

Which storage services can Muesli use?

Listed options include local files, S3-compatible storage such as AWS S3, Cloudflare R2, and MinIO, plus GitHub, Gitea, Forgejo, and Google Drive.

What does self-hosting require?

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.

Facts from Muesli's own pages

Agent review: When a human is present in a document, agent edits become suggestions for review. · muesli.md, 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, 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, 2 Oct 2026
Cloud sync: Yes · muesli.md, 20 Sept 2026
Real-time collaboration: Yes · muesli.md, 20 Sept 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, 2 Oct 2026
Free plan: Yes · muesli.md, 20 Sept 2026
License: The project is open source under the AGPL-3.0 license. · muesli.md, 2 Oct 2026
Live collaboration: It offers live cursors and presence, comment threads, tracked suggestions, and append-only history with snapshots. · muesli.md, 2 Oct 2026
Local file support: Yes · muesli.md, 20 Sept 2026
Markdown tools: The editor includes inline preview and source toggle, KaTeX math, Mermaid diagrams, editable tables and callouts, wikilinks, and backlinks. · muesli.md, 2 Oct 2026
Platforms: The maker lists browser use and desktop builds for macOS, Windows, and Linux; the download page labels the desktop downloads “Coming soon.” · muesli.md, 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, 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, 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, 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, 2 Oct 2026
Sharing: Role-scoped guest links support viewer, commenter, and editor access without requiring collaborators to have accounts. · muesli.md, 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, 2 Oct 2026
Support: The maker provides support and privacy contact by email at [email protected]. · muesli.md, 2 Oct 2026

Where Muesli stands on Freedom251

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