Syntax highlighting is very important especially when we want to show our code example on the blog. By enabling the syntax highlighting on the blog, readers can read the code blocks easier.
I believe this is the most common syntax highlighting script used by most of us. It supports a lot of different languages and you can easily create new “brush” for your language if it is not supported by default. Check out the custom brushes list compiled by Abel Braaksma.
beautyOfCode is a jQuery plugin for syntax highlighting. It uses the SyntaxHighlighter scripts by Alex Gorbatchev and makes it more XHTML-compliant.
Chili is a jQuery code syntax highlighting plugin. It comes bundled with recipes for a lot of languages and supports many configuration options.
Lighter.js is a free syntax highlighting plugin for MooTools. Using lighter.cs is as simple as adding a single script to your webpage.
highlight.js is easy to use and supports a lot of programming languages. It has some plugins for easily integrations to other CMS, forum or blog.
JUSH is yet another jQuery syntax highlighting plugin which supports different programming languages such as HTML, CSS, PHP, PY and SQL.