Mark Text is a free, open source, and intuitive Markdown editor for Mac, Windows, and Linux. It provides rich text editing, real-time preview, code syntax highlighting, and many other features to help you write beautiful documents. It has an intuitive user interface that allows you to quickly create and edit documents without worrying about formatting. It also supports exporting to PDF, HTML, and other formats. With Mark Text, you can easily create blog posts, technical documentation, and other documents without any hassle.
Discontinued The program seems to be no longer updated. The latest version, 2.5, released in December 2014, can still be downloaded from the official website.