How to: Code Highlighting
* [CodeRay](https://github.com/rubychan/coderay) - Fast and easy syntax highlighting for selected languages.
* [pygments.rb](https://github.com/tmm1/pygments.rb) - A Ruby wrapper for the Python pygments syntax highlighter.
* [Rouge](https://github.com/jneen/rouge) - A pure Ruby code highlighter that is compatible with Pygments.