The Maven license plugin manages the LICENSE.TXT and THIRD-PARTY.TXT files as well as the license header on any kind of text files your project might be composed of (source files or generated files for release).
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.