Domain Name Relay Daemon is a caching, forwarding DNS proxy server. Most useful in vpn or dialup environments but it is also a nice DNS cache/ad-blocker for minor networks and workstations.
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.