JetClass, Java net-class application, allows virtual lectures to be held by teachers and students located in front of their computers, somewhere around the globe. It's written in Pure Java, relying on CORBA for network communications.
J2EE based database access; an alternative to Entity EJBs that allows for much higher performance, easier use, less coding, more dynamic, and more tuned to use with a web presentation layer (such as Tapestry).