pandoc (markup conversion tool)

Pandoc is a command-line tool for converting from one markup format to

another. It can read markdown and (subsets of) reStructuredText, HTML,

and LaTeX, and it can write plain text, markdown, reStructuredText,

HTML, LaTeX, ConTeXt, PDF, RTF, DocBook XML, OpenDocument XML,

ODT, GNU Texinfo, MediaWiki markup, groff man pages, EPUB ebooks,

and S5 and Slidy HTML slide shows.