The Game Operating System is a platform for the complete creation of 2-d role playing games. See the project home page, http://gameos.sourceforge.net, for a more complete description.
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.