Yarrwin!
The Yarrwin project was created to make it easier for developers and distributers to use Apple's Darwin source code in their project.
I'm Matt Lee, one of the folks behind behind Foo Communications, a company/experiment in music and social media, including Libre.fm, a new social media platform that offers musicians exclusive promotion and play in exchange for licensing their music under a free culture license, and GNU social, a federated social networking project.
The Yarrwin project was created to make it easier for developers and distributers to use Apple's Darwin source code in their project.