Groovy Monkey is a Utility for Eclipse that enables you to create scripts in Groovy, Beanshell, Python or Ruby to run directly in Eclipse. This tool can be used to Eclipse API exploration, automation scripts, and rapid plugin prototyping.
The XML Code Template Engine produces class code skeletons that can include equality and logging methods in C++ or Java(so far) from an XML document outlining. It also creates Doxygen compatible comments and a has very simple plugin system.
The Rally Integrations Project includes a set of integrations between Rally Software's Agile Lifecycle Management product and other software lifecycle management tools. NOTE: The Hudson plugin is now at http://agilecommons.org/posts/347cf00b5d