psx forum is a state-of-the-art forum system. You can add tags to every thread and rate it up or down. It is easy to install and you can maintain the forum without an admin area.
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.