Michael Hoffer's VRL Studio was center stage during Devoxx, at the Oracle booth, to support Stephen Chin's 3D printer.
I spent some time during Devoxx porting the application to the NetBeans Platform. Modularity, docking framework, pluggability, and more are all features that the NetBeans Platform can provide VRL Studio.
The main thing that's not working right now is the integration with Groovy. Somehow the classloaders in VRL Studio are not finding Groovy on the classpath of the NetBeans Platform.