aub is a time-tested Perl program to download articles from newsgroups and decode them automatically. It is simple, well documented, and easy to use and configure. It handles multi-part postings, and both uuencoded and base64 encodings.
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.