pandoc - Pandoc is a Haskell library for converting from one markup format to another, and a command-line...
Markdown by DaringFireball - Text-to-HTML conversion tool/syntax for web writers, by John Gruber
Docutils - Docutils is an open-source text processing system for processing plaintext documentation into...
Textile - Textile is a lightweight markup language originally developed by Dean Allen and billed as a...
txt2tags - It reads a text file with minimal markup such as **bold** and //italic// and converts it to the...
Typora - A minimal Markdown reading & writing app.