Synchronize local PC time using the NIST Internet Time Service or LAN timeservers.

Transparent digital clock for your desktop with various interface themes. Provides scheduled time synchronization via Internet. Supports a customizable hour and or half an hour strikes, multiple alarms, quick reminders, countdown and stopwatch timers.

Windows software featuring multiple alarms, stopwatches and timers.

Customize the taskbar system clock and set alarms directly from it. Features include simple or recurring alarms, countdown and stopwatch timers, notes, a pop-up calendar, and Internet synchronization.

Offers Chronograph, software for Windows that synchronize PC clock to Atomic Time.

It can periodically check and synchronize the computer time with NIST atomic time servers with HTTP/Socks4/Socks4A/Socks5 proxy support, or synchronize time between computers, and can also act as a time server.

Clock will periodically check and synchronize the computers time with a NIST atomic time server, or synchronize time between computers, and can act as a timeserver.

A desktop program that calibrates the system time of the computer with the Atomic Time servers on the Internet using the Simply Network Time Protocol (SNTP). Has a skinnable user interface. [Windows 98/ME/NT/2000/XP]

Windows shareware program that connects to an Internet timeserver and retrieve the official time and adjusts the computer accordingly. Features support for MS Agent, and the ability to act as a timeserver on your LAN.

Shareware program that will synchronize your PC clock with the atomic clock server in Boulder, Colorado, by Bruce Adelsman.