The Eidos UML Project (http://java.net/projects/eidos-uml) is running out of developers!
Sadly it is in a phase where I can't push it forward any more.
The components blocking progress in the project are:
The issue with the pallete is that I have no experience with it. The issue with the repository is that I'm unable to follow the logic in the available code.
So if you're missing the NetBeans UML plug-in and have the time/experience to help, I'll be more than happy to welcome you to the team!
Just send me your java.net user name, to firstname.lastname@example.org
You can see the open issues http://java.net/jira/browse/EIDOS_UML.