Isis: Domain-Driven Apps in Java
In October, Apache Isis became a top-level project after 2 years in the incubator. Isis is an interesting project. It's a Java framework for developing domain-driven and RESTful applications using the Naked Objects pattern.
Danny Haywood is the proud PMC of this project who says they've now moved the project onto Apache's CMS infrastructure.
Check out the project and have a look at this video to get started with it: