Popeye is a chess problem solving and testing software with strong support for fairy chess and heterodox genres.
For more information cf. topic "Popeye (chess)" on http://en.wikipedia.org/
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.