Brandywine Communications
Offers advanced off-the-shelf and custom hardware time and frequency solutions including Network Time Protocol servers. Timeserver description on Wikipedia
Some useful information about the basics of what a time server is. Configuring Microsoft's Win32Time service.
Useful information on how to configure the win32time service which ships with Microsoft's server products. Beagle Software
NTP, Daytime timeserver and client software and hardware. PresenTense Time Server
Multi-protocol time server which synchronizes itself with any true time source, including GPS via rs-232 com ports and then acts as a time server for all network clients. Screen-shots, features list, documentation, and free 30-day demo version. EndRun Technologies
Provider of time and frequency equipment including NTP Servers. Galleon Systems
Provider of NTP time synchronisation solutions using the MSF radio signal and GPS satellites. Meinberg USA
Manufacturer of hardware Network Time Servers (NTP) for IPv4 and IPv6 networks. NPL Computer Time Services - Truetime/NPL Phoneclock
Synchronization to UK time by telephone. This is the UK's national measurement laboratory. ELPROMA NTP Servers
European manufacturer of NTP Time Servers. Network Time Protocol (NTP) Project.
The official page for the NTP Project. Contains information about the project, reference implementations of the protocol and software links. Also links to the pool of public NTP servers. Open NTPD
A mainly BSD implementation of the Network Time Protocol. Spectracom: GPS hardware NTP and SNTP clocks.
Manufacturer of hardware GPS clocks and NTP/SNTP servers. Legally traceable time. Symmetricom, Inc.
Manufacturer of time and frequency synchronization equipment, including NTP Servers. NIST Web Clock
Shows the official US time in each time zone. TimeTools
Specializes in computer and network timing solutions. Using NTP for network time synchronisation in conjunction with MSF, DCF-77 and GPS time sources. NTP with TymServer
Hardware NTP time server manufacturer.