WebTimeSync 

The WebTimeSync 6 time synchronizer connects to one of the NIST atomic clock time servers to synchronize your computer's clock.
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Trout's Internet Clock 

Desktop Clock, Scheduler and Time Synchronizer. Liven up your desktop with clocks of any shape, size, color. Schedule multimedia, text reminders, run programs. Synchronize your system clock. Dynamic system tray icon, semi-transparent clocks.
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Time Zones Clock 

Running on your PC Time Zone Clock will show you the local time of over 300 cities around the world. Simply select the cities you want to display the local time and they will be displayed on your desktop.
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AlarmWiz 

AlarmWiz is an easy to use reminder program and task scheduler which can play audio files, dial Internet connections, send emails, perform FTP transfers, launch programs, and more.
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Chronograph Lite 

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.
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DS Clock 

DS Clock is a digital desktop clock that displays variable date, time, and time zone information built from the format string. It allows you to fully customize its look and feel, and can synchronize your computer's clock with Atomic Time Servers.
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