GitHub Flavored Markdown is described as 'GitHub uses "GitHub Flavored Markdown," or GFM, across the site--in issues, comments, and pull requests. It differs from standard Markdown (SM) in a few significant ways, and adds some additional functionality' and is an app. There are five alternatives to GitHub Flavored Markdown for a variety of platforms, including Linux, Mac, Windows, Web-based and Self-Hosted apps. The best GitHub Flavored Markdown alternative is Textile, which is both free and Open Source. Other great apps like GitHub Flavored Markdown are MyST Markdown, PHP Markdown, MarkMyWords and ReAdABLE Human Format.
Textile is a lightweight markup language originally developed by Dean Allen and billed as a "humane web text generator". Textile converts its marked-up text input to valid, well-formed XHTML and also inserts character entity references for apostrophes, opening and...
MyST makes Markdown more extensible & powerful to support an ecosystem of tools for computational narratives, technical documentation, and open scientific communication.
The ReAdABLE Human Format aims at Agile Documentation by making WRITING and READING document easier for End User and Developer alike, while allowing a high degree of flexibility.
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