Ryzom Core is a toolkit for the development of massively online universes. It was used to make the commercial MMORPG Ryzom. It provides the base technologies and a set of development methodologies for the development of both client and server code.
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.