Alternatives to AboutTime for all platforms with any license

NetTime

NetTime is a Simple Network Time Protocol (SNTP) client for Windows 95/98/Me/NT/2000/XP/Vista/7/Server 2003/Server 2008 (32 bit and 64 bit operating systems are both...

Free Open Source Windows
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10 Like
Chrony

Chrony is a pair of programs which are used to maintain the accuracy of the system clock on a computer. The two programs are called chronyd and chronyc.

Free Open Source Linux
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Time-Sync

Time-Sync is a freeware software to synchronize the time of your system. The features of the software are: - Simple self-explanatory software - Configuration in a...

Free Windows
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Meinberg NTP

NTP client and server download for different operating systems. GUI setup program, full HTML documentation, OpenSSL (Version 0.9.8l) DLL. The installer has been...

Free Windows
Real-Time Synchronization Add a feature

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TimeSync

TimeSync gets the current time from a NIST server, and adjusts the PC clock if necessary. Accuracy is usually within a second. Time and date are displayed according to...

Free Windows
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4 Like
Network Time Protocol daemon

The Network Time Protocol daemon (ntpd) is an operating system daemon program that maintains the system time in synchronization with time servers using the Network Time...

Free Open Source Linux
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Neutron

Neutron is a very simple and small time synchronizing program that retrieves the accurate time from one of several specialized time servers on the Internet. Once the...

Free Windows
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3 Like
Atomic Clock Time Synchronizer

Atomic Clock Time Synchronizer is a useful and handy utility to keep your PC clock accurate. It periodically checks and synchronizes your computer clock with NIST atomic...

Free Windows
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2 Like
Advanced Time Synchronizer

Advanced Time Synchronizer is a PC clock synchronizer. It works with time servers on the Internet, supports three time synchronization protocols, proxy servers...

Commercial Windows
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Dimension 4

Synchronize your PC's clock to within milliseconds of "real" time Use one of several available protocols: - SNTP - Time/udp - Time/tcp - HTTP ...

Free Personal Windows
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2 Like
Network Time System

Network Time System is a time sync software package containing NTP Server and NTP client apps for Windows that provides a precise tool for synchronization of all devices...

Commercial Windows
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Desktop Atomic Clock

Desktop Atomic Clock is an atomic clock time sync software designed to keep your computer clock always accurate by synchronizing it with an atomic clock NTP server over...

Commercial Windows
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Atomic Clock Sync

Atomic Clock Sync utility can help you optimize how often Windows references an atomic clock server, such as the atomic clock servers operated by the National Institute...

Free Windows
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