1)   Global Time Synchronizer 1.0
Global Time Synchronizer is a versatile time keeping tool that has many features including the ability to modify the look of your standard desktop clock, an easy-to-use, convenient interface that uses skins to modify its appearance and much more.

 2)   Desktop Atomic Clock 2.23
Desktop Atomic Clock is a program to synchronize your computer clock with an atomic clock over the Internet. You can choose to synchronize the time automatically or use the manual mode

 3)   Emsa Time Synchronizer 1.0.46
Emsa Time Synchronizer is a very simple but useful time synchronization utility. Users that like simplicity, may indeed like this program. It can continously update time in background and autorun at system startup. Freeware.

 4)   Time Sync Pro 1.2
Time Sync Pro is an application that connects to one of the many atomic clock web servers, downloads the time to your PC and adjusts it. Time Sync Pro has many features including the automatic adjustment of your computer clock.

 5)   Atomic PC Clock 1.2
Atomic PC Clock allows you to make the most of your time! By using Atomic PC Clock, you will not be late for important appointments. Atomic PC Clock's intuitive user interface is ideal for both the novice and expert PC user.