Open Source Objective C Markdown Editors

MacDown is an open source Markdown editor for macOS, released under the MIT License. It is heavily influenced by Chen Luo’s Mou.

MacDown 3000 is a lightweight, open-source Markdown editor for macOS, designed for efficient writing and document formatting. It combines a text editor with live HTML previews that update as users type. The application supports CommonMark and GitHub Flavored Markdown, including tables, task lists, and fenced code blocks. Prism-based syntax highlighting improves the readability of embedded programming code. Mathematical notation and Jekyll front matter extend its capabilities for technical documentation. Users can export documents to HTML or PDF with customizable styling. Folder-based workspaces provide sidebar navigation and tabbed editing across multiple Markdown files. Additional editing conveniences include automatic bracket pairing, list continuation, and formatting shortcuts. It supports both Apple Silicon and Intel Macs.