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

Atom Time Synchronizer
is a useful and handy utility to keep your PC clock accurate. It can periodically check and synchronize your computer time with a NIST atomic time server, or synchronize time between computers, and can also act as a time server. Key Features: 1. Synchronize time with NIST atomic time servers 2. ... Can synchronize time with any server running SNTP or TIME protocol 9. ... Periodically check and synchronize time 10. ... Display time in either local time or UTC/GMT 11. ... Synchronize time bewteen computers 3.
http://www.lmhsoft.com/atsync.exe - 664Kb - 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

PC Atomic Sync
(*) It is an atomic clock synchronizer with some useful features (time offset, synchronize periods, etc. ). The main idea of the program is to synchronize your PC's clock in the most reliable and resource-saving way. (*) The unique Time Offset feature of the program allows setting up your PC... Any server allows you synchronize your computer with precision less then 0. ... They are open NTP (Network Time Protocol) servers. ... Otherwise the program checks for Internet connection, then tries to synchronize your clock and ends its work if succeeded.
http://www.brigsoft.com/atomic-clock-sync/download/BsAtomicInst.exe - 543Kb - Download - Screenshot

Admin Http Time Sync
(1) The main purpose of the program is synchronizing PC clock using HTTP protocol instead NTP or SNTP protocols. Some users and system administrators need such product because they have problems with standard (NTP,SNTP) synchronization. There are firewalls that make such synchronization difficult. ... (5) It has some additional useful options as time offset, synchronize periods, time sources choosing, etc. ... If you have fluent time error you can synchronize computer every hour. ... The script that shows the server time is delivered with it.
http://dn.brigsoft.biz/AdminHttpTimeInst.exe - 606Kb - Download - Screenshot

iTimeSync
The accuracy of your PCs clocks is important for many reasons, but keeping it that way can be a chore. iTimeSync does the job for you by contacting one of many NIST time servers over the internet. No configuration is needed, simply connect to the internet, run the program and press "Correct". ... Other features include detailed logging, auto advance to another server if the selected one fails, auto start, minimize to tray, check without change, correct only minutes and seconds mode, variable time-out, max/min times, and a positive or negative time offset can be set if you are in a obscure...
http://www.sinnercomputing.com/Software/iTimeSync.zip - 33Kb - Download - Screenshot

Express Timesync
Express Timesync is an ideal solution for keeping the computer clock accurate. It allows you to synchronize the clock to the official correct time by using the reliable time servers on the Internet or on LAN. Express Timesync supports SNTP (RFC2030) and TIME (RFC868) protocols and has built-in... The time server test feature allows organizing the reference time server list to include only reliable servers. ... The application uses a prioritized reference time server list. ... You can choose the national time server operating in your region from the built-in list.
http://www.express-computing.com/files/ExpressTimesyncSetup.exe - 1Mb - Download - Screenshot

Accurate Shutdown
Accurate Shutdown is a powerfully automatic software that turns off your computer and at the user-specified time. It can turn off / reboot / logoff the computer, turn off the monitor only, disconnect from the Internet, and execute one or a group of programs. ... -==Features==- Supports most operating systems: Windows 98/Me/NT/2000/XP Turns the power off completely; Executes appointed programs at the user-specified time; Synchronize your PC's time to atomic clock servers; various timer options to meet different needs.
http://www.accuratesolution.net/asd/asd.exe - 1Mb - Download

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 can adjust the system time correctly even if you have irregular Windows time zone settings. ... You can configure 1st Atomic Time to operate as a time server. ... Also, 1st Atomic Time can synchronize the time at Windows startup without wasting your computer's resources.
http://www.atom-time.com/download/1st-atomic-time.exe - 707Kb - Download - Screenshot

PresenTense Time Server
PresenTense Time Server is a high performance Windows time server supporting NTP and SNTP protocols. You can use PresenTense Server to synchronize your PC to a primary time source such as an atomic clock on the internet or an inhouse GPS reciever and offer time services to clients on your local... Installation automatically configures default time servers so in most cases, you have an operational time server after the install is complete. ... Fallback to an internet based time server if local GPS hardware fails.
http://www.bytefusion.com/download/bin/ptsvrdemo.exe - 4Mb - Download - Screenshot