Multilanguage Syntax Highlighter: GeSHi

GeSHi is a highly customizable syntax highlighter that can be used to better present code snippets in websites.

It is developed to be used in phpBB forum software but is also presented for seperated use.

This syntax highlighter supports almost every popular langugae like ActionScript, ASP, C, JAVA, PHP, Ruby, SQL & more (even robots.txt).

Some features of GeSHi:

• The ability to change the styles of any highlighted element on the fly
• Use of CSS classes to reduce the amount of output produced (GeSHi can also produce a stylesheet to be used with a language on the fly)
• XHTML 1.0 Strict + CSS2 compliance
• Auto-caps/noncaps of keywords
• Line numbering
• And many more!

P.S. GeSHi requires PHP to run.