1st Atomic Time - Keeps your system time accurate by synchronizing it with atomic time servers

Analog Clock - Analog Clock is an analog, skinnable Windows tray clock replacement.

Atomic Clock Service - PC atomic clock synchronizer with useful features (time offset, periods, etc.)

Advanced Time Synchronizer - Synchronizes your PC clock with public time servers on the Internet.

Emsa Time Synchronizer - Emsa Time Synchronizer: Atomic time sync utility for Windows. Freeware.

Internet Usage Monitor - Monitors the time spent on the internet and calculates the cost accordingly

Precise Time 2002 - Precise Time 2002 syncronizes your computer's system clock to time servers.

Atom Time Synchronizer - Atom Time Synchronizer - Keep your PC clock accurately synchronized