eSquire is a majordomo replacement that provides a web frontend to most list manager functions. Subscribe / Unsubscribe functions use the majordomo style so users don't necessarily notice that it's not majordomo.
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.