1)   Chronograph Lite 4.1
Chronograph is a simple award-winning program which synchronizes your local PC clock using atomic-time servers. It has an easy-to-use, nice-looking interface, so you can adjust your time with just two mouse clicks.

 2)   Chronograph 5.0
Chronograph is a simple award-winning program which keeps your computer's clock accurate using atomic time servers. It is able to replace the standard Windows clock in the system tray and uses Winamp skins for thousands of different styles.

 3)   1st Atomic Time 2.12
1st Atomic Time adjusts your system time with Internet atomic time servers. You can pick the fastest and most reliable servers and adjust the time automatically at regular intervals. 1st Atomic Time can work as a time server for any network.

 4)   HiClock Pro 3.19
HiClock Pro gives you an easy and thorough way to synchronize your system clock to the exact time using the Internet. It queries one of the National Institute of Standards and Technology timeservers, which then returns the correct standard time.

 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.

 6)   PresenTense NTP Auditor 3.7
PresenTense NTP Auditor monitors your computer's built-in clock and compares it's time to the real time. PresenTense NTP Auditor can save logs for days, months and years so you can PROVE what time your computer had at any given point.