1)   Absolute Time Server 5.0
ATS is a full-featured time server, which works as WinNT service and is fully RFC-868 and RFC-2030 compatible. Absolute Time Server acts as a background process, has very low system resources consumption, and it can be started before user logon.

 2)   Absolute Time Corrector 6.9
Absolute Time Corrector is an award-winning program, which allows you to synchronize your local PC time using NIST (National Institute of Standard Time) Internet Time Service or LAN time servers.