“Apache Rave provides a next-generation portal engine,
supporting (Open)Social Gadgets as well as WC3 widgets. Have a go
with the latest release and you will see that it works
out-of-the-box, but it can alternatively serve as the basis for an
enterprise-level social portal application.
The way Rave came about and is still moving forward is a clear
demonstration of open innovation in software. The project
originated from a collaboration of partners that donated the
software they have been developing independently, because they
recognised that there was so much overlap in their projects, that
collaborating on a shared codebase would generate more benefits
than the effort that they would need to put in.