mcuStudio is a development environment for Microcontrollers. It's based on Eclipse (plugin). The aim is to provide a high quality development environment for electronics. First editions will target Microchip Pic mcu's. Other mcu will be supported later.
BeanClipse is a NetBeans plugin for Eclipse: NetBeans runs embedded within the Eclipse platform as a plugin offering the best of both worlds to Java developers.
May be just a joke ;-) ....
Check also it's twin at : http://sf.net/projects/netclipse
Plugin for the Eclipse platform that allows various means of introspection into the internals of the platform at runtime. This plugin reveals the way the platform components are composed and how they work together.
This Open Source project is to integrate Jonas, an EJB container from ObjectWeb (www.objectweb.org/jonas) in the development tool Eclipse (www.eclipse.org).