Absolute Time Server is a free, full-featured time server, which works as windows service and is fully RFC-868 and RFC-2030 compatible.

Absolute Time Server ver. 5.4
Sunday, 22 November 2009 10:56
Meet the new version of Absolute Time Server version 5.4. It now supports the new Microsoft Windows Server 2008. More details and the trial version are available on the product page.