Markdown by DaringFireball - Text-to-HTML conversion tool/syntax for web writers, by John Gruber
Texy! - Texy! is a lightweight markup language as well as converter of this format to XHTML, in a form of a...
Asciidoctor - In the spirit of free software, everyone is encouraged to help improve this project.
pandoc - Pandoc is a Haskell library for converting from one markup format to another, and a command-line...
Textile - Textile is a lightweight markup language originally developed by Dean Allen and billed as a...
Docutils - Docutils is an open-source text processing system for processing plaintext documentation into...