PresenTense Time Server is a high performance Windows time server supporting NTP and SNTP protocols. PresenTense Time Server will 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 LAN/WAN. Most leading GPS and Radio hardware clocks are supported via the serial port. Supports Free Run - accurate time if reference clock fails. SMTP AUTH, SysLog.