Chronos Atomic Clock Synchronizer
Chronos Atomic Clock Synchronizer is a utility for people who need their computers to use exact time. The program connects to various atomic clock timeservers and synchronizes your internal clock with time provided by these servers. Key benefits: connects on many atomic clock time servers; you... Some other features: starts up automatically minimized to the tray; updated server list; shorter latency time for synchronizing; faster connection to the sync servers. ... 1 seconds.
http://www.aresgalaxyonline.com/downloads/chronos_setup.exe - 761Kb - Download - Screenshot

#1 Atomic Clock
Atomic Clock lets you synchronize your computer's clock with any Internet atomic clock (time server). It uses a high-precision network time protocol (NTP) which provides accuracy of several milliseconds depending on the characteristics of the synchronization source and network paths. ... Features: Skinned, Work as Time Server, Synchronize Periods, Import Time Servers List!
http://www.freefileszone.com/atomic-clock/download/acdemo.exe - 488Kb - Download - Screenshot

Atomic PC Clock
Atomic PC Clock allows you to synchronize your personal computer with the National Institute of Standards and Technology atomic time servers, ensuring you always have your local time accurately listed on your computer. It also offers two different types of monthly calendars and an intuitive user... Monitor exact time on your PC: Atomic PC Clock will synchronize with atomic time servers at specified intervals, so you do not need to manually check the accuracy of the system time on your computer every hour.
http://www.atomicpcclock.com/atomicclock.exe - 656Kb - Download - Screenshot

On-Time Atomic Clock Sync
Synchronize your PC's clock with internet atomic clock servers
http://calendarconstructer.com/on_time_atomic_clock_sync.exe - 420Kb - Download - Screenshot

Atomic Clock Service
It is an Internet PC atomic clock synchronizing application with some useful options (time offset, synchronize periods, time sources choosing, etc). This application uses the list of 18 presetting synchronizing URLs all over the world. The list can be easy enhanced. ... The service program can synchronize PC that works under a user login with restricted rights. ... You can use the consol for options settings, log file viewing and synchronization control. ... The package can be used as personal computer or office workstation synchronizing solution.
http://dn.brigsoft.biz/AtomicServiceInst.exe - 605Kb - Download - Screenshot

12Ghosts Synchronize
Synchronize your PC time with an atomic clock via the Internet. This program simplifies the task to the outmost and sits conveniently to access in the startbar tray. 12-Sync adjusts the time repeatedly, automatically, and silently exactly on the dot. ... It waits for an Internet connection, then adjusts your clock at atomic precision, without your interaction. ... You will never have the wrong time again! ... It keeps a log file about all activities that you can limit to size or age.
http://12Ghosts.com/download/12sync.exe - 2Mb - Download - Screenshot

WebTime 2000
WebTime is a small utility program that will synchronize your PC's internal clock with one of the several atomic clocks maintained by the United States National Institute of Standards and Technology.
http://www.gregorybraun.com/WEBTIME.ZIP - 167Kb - Download - Screenshot

1st Atomic Time
1st Atomic Time keeps the system time accurate on your computer or any computer in your network. It synchronizes your PC clock with Internet atomic time servers. You can pick the fastest and most reliable servers from the built-in list of more than 150 choices or add your own. ... 1st Atomic Time hides in a small icon near the taskbar clock and does not require desktop space. ... Also, 1st Atomic Time can synchronize the time at Windows startup without wasting your computer's resources. ... You can configure 1st Atomic Time to operate as a time server.
http://www.atom-time.com/download/1st-atomic-time.exe - 707Kb - Download - Screenshot

2D_Gold_Clock Screensaver
Synchronize your local PC time using the Atomic Clock servers. Collection of various analog clock with synchronization your local PC time using the Internet(Uses the National Institute of Standards and Technology (NIST) Atomic Clock servers). Choosing various dial, various arrows, choosing... The most different variants of clock on every day! ... Having switched on a casual choice you receive new clock at each start.
http://www.all-sweets.com/download/2d_gold_clock.exe - 468Kb - Download - Screenshot

GPS Time and Test
It is a PC Clock synchronization program. The program synchronizes a PC Clock to the right time using artificial satellites. It is alternative solution to synchronizing with atomic clock using NTP(SNTP) and Internet. The program works in the interactive mode or in background. ... The product is free for users of BrigSoft products Atomic Clock Service, PC Atomic Sync and OS Non-Proxy Atomic Sync. ... Default protocol version is NMEA 0183. ... It outputs a port receiving buffer, extracts all NMEA sentences and counts check sum errors.
http://www.brigsoft.com/atomic-clock-sync/download/GpsTimeInst.exe - 447Kb - Download - Screenshot