jQuery.Syntax is an extremely fast and lightweight syntax highlighter. It has dynamic loading of syntax source files and integrates cleanly using CSS or modelines. Plugins are available for DokuWiki and WordPress.
Muninwalk is a command line interface for Munin. Its behavior is similar to snmpwalk. One difference between it and snmpwalk is the collection of data from munin-node (TCP port 4949).
A scripting language for large projects.
A full-featured cross-platform IDE written in Java.