Since 1978 or so, VistA FileMan (aka File Manager) has been the database management system of the VistA (Veterans Health Information Systems and technology Architecture) medical software system created by the U.S. Department of Veterans Affairs.
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.