Dark/sk sources are kernel patchset projects created by predatorfreak (Brett G.), focused on maintaining stablity and scalabliy. Everything that goes into these patchsets is selected based on these goals.
Open source project that offer summary and download services on this page is a project that carry out their development work on other open source development sites. Their work is linked to this page via a feature called OFI, and their work is not carried out here on OSDN site.