URD is a backronym of Usenet Resource Downloader. The term Urd is derived from Nordic cultures referring to the Well of Urd, which is the holy well, the Well Spring, the source of water for the world tree Yggdrasil. The old English term for it is Wyrd. Conceptually the meaning of Urd is closest to Fate.

URD is being developed by Spearhead and Styck, as Free Software. Hence it is released under the GNU Public License version 3.

It should run under Linux (tried and tested), OpenBSD & FreeBSD. Windows is not supported as the Daemon uses the PHP pcntl library which is incompatible with Windows.