If you head on over to the projects page, you'll find links to a number of projects over on SourceForge.net. They are:

perftools: different libraries and tools to help tune and debug your multi-threaded c++ programs.
coredumper: Gives you the ability to dump cores from programs when it was previously not possible.
goopy/functional: brings functional language behaviors to python.
sparsehashtable: brings a variety of new hash tables to C++.

Each has a Google group that you can participate in and we hope you find them as useful as we do!