A project by Veqryn for creating, centralizing, and hosting all open-source TripleA maps, as well as other developer resources such as artwork and map makers. If you need the actual TripleA program, go here: https://sourceforge.net/projects/triplea/
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.