Muesli vs StackEdit

Muesli is a free, real-time collaborative Markdown editor for teams and AI agents working in the same plain .md file. Collaborators can see live cursors and presence, discuss material in comment threads, submit tracked suggestions, and use append-only history with snapshots. Editing tools include 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 work through MCP or edit the file directly. When a human is present in a document, agent edits become suggestions for review. Guest links can grant viewer, commenter, or editor access without requiring accounts. Storage choices include local files, S3-compatible services, GitHub, Gitea, Forgejo, and Google Drive. Muesli is available on the web, Windows, macOS, Linux, and as a self-hosted service, and is open source under AGPL-3.0. Self-hosting uses one Docker image, but durable documents and history require Postgres and Redis. The hosted service says document contents remain in user-chosen storage and are not read, mined, or used for training.

StackEdit is an in-browser Markdown editor for writing, formatting and publishing documents. It highlights Markdown syntax and offers formatting controls alongside a live preview whose scrolling follows the editor. The site says it remains accessible for offline writing, and it supports local files as well as cloud sync with Google Drive, Dropbox and GitHub. Writers can share collaborative workspaces; when two collaborators edit the same file simultaneously, StackEdit merges their changes. Files also support inline comments and embedded discussions. The editor handles Markdown Extra, GitHub Flavored Markdown and CommonMark, with features configurable. It can publish blog posts to Blogger, WordPress and Zendesk, using Markdown, HTML or Handlebars-template formatting. Other supported content includes LaTeX mathematical expressions, sequence diagrams, flow charts, musical scores in ABC notation and emoji markup. Export formats are Markdown, HTML and PDF. StackEdit is listed as free and open source under an Apache License. Supported platforms include the web, a Chrome extension and self-hosting; the maker’s site displays a 2013–2019 copyright range.