Hudson is a Continuous Integration (CI) server which polls a version control repository and runs an automated build soon after a change is detected in the version control repository. Hudson organizes CI jobs into projects. Each project has its own build script and its build results are stored within Hudson's work area.
The NetBeans team is pleased to announce the availability of NetBeans IDE 7.0 Beta.
We'll not tackle what is X server nor what is VNC, instead you may use the power of Google or just visit Wikipedia.