L-Forum is universal Web forum written in PHP. It has support for threading, multiple languages, and the PostgreSQL/MySQL database server. You can also easily change its design, or even change design on-the-fly with themes support.
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.