Prism

Prism is a new lightweight, extensible syntax highlighter, built with modern web standards in mind. It’s a spin-off from Dabblet and is tested there daily by thousands.

This module will provide proper integration with the 3rd-party library, a simple API for developers, an input filter, and expose all options of this library via standard Drupal settings forms.

This module requires both prism.js & prism.css to be located in,
sites/all/libraries/prism/
Prism can be download from http://prismjs.com/download.html

Read more about this library at Prismjs.com, also, read this blog post by Lea Verou introducing it.