MacDown

A free, open source Markdown editor for your Mac. Write Markdown on the left and watch the formatted page appear on the right as you type.

Install

brew install --cask levous/tap/macdown-swift

Or download MacDown-<version>.zip from the latest release, unzip it, and drag MacDown.app into your Applications folder.

MacDown needs macOS 15 or later. Once it's open, Help ▸ MacDown Help walks you through everything it can do.

See your writing as you go. A live preview of standard Markdown: headings, lists, tables, task lists, footnotes, code and more.
Write code and math. Code blocks are colored in hundreds of languages, and math renders with MathJax.
Draw diagrams. Mermaid and Graphviz diagrams render right in the preview.
Type less. Lists and quotes continue when you press Return, brackets and quotes close themselves, and the toolbar and shortcuts apply formatting.
Make it yours. Pick an editor theme and a preview style, or add your own.
Share it. Export to HTML or PDF, or print.
Work from the terminal. macdown file.md opens a file, and you can pipe text in. Homebrew installs the macdown command for you; otherwise, link it with:
```
ln -s /Applications/MacDown.app/Contents/SharedSupport/bin/macdown /usr/local/bin/macdown
```

How MacDown is built, including building it from source and contributing.
MacDown is a Swift rewrite of the original MacDown; installing it replaces the original. What's kept and what changed.

MacDown is released under the MIT license; see LICENSE. Third-party licenses are in Licenses/.