It's only a couple of days since the news that Java is going GPL. The kind of initial flurry has died down but the substance is starting to come along.
The OpenJDK project is off and running. There are two parts - the Java Compiler and the Java Hotspot VM.
The GlassFish Project is for the goal of building open-source, production quality, enterprise software. This project is already a year old.
I've downloaded some of the code already to take a look at it. It's quite nicely written and as such is pretty understandable for such a complex project.
