"A BarCamp is an ad-hoc gathering born from the desire for people to share and learn in an open environment. It is an intense event with discussions, demos, and interaction from attendees" ... sort of like hackfest on steroids? (free)
Apache Maven's reuse mechanisms simplify the build process and generally improve upon the popular Ant tool's functionality. In fact, developer and Java technology trainer Dave Ford believes Maven could very well replace Ant as your preferred Java build tool.
XMLAD, the XML Acronym Demystifier project, helps you to keep up with the ever growing number of acronyms and terms related to XML, the Extensible Markup Language.
"The goal of this project is to develop a set of NetBeans modules to help developers write code in dynamic languages using the NetBeans IDE. Initially, we are targeting the the Groovy and Jython languages, but we anticipate a common framework allowing support for more languages."