1)   PresenTense NTP Auditor 3.7
PresenTense NTP Auditor monitors your computer's built-in clock and compares it's time to the real time. PresenTense NTP Auditor can save logs for days, months and years so you can PROVE what time your computer had at any given point.
SNTP, ntp, ntp4.0, ntp40, atomic clock, time server, windows time server, gps, gps clock, accurate,

 2)   PresenTense Time Server 4.0
High performance Windows time server supporting NTP and SNTP protocols. Installation automatically configures default time servers - up and running in 30 seconds. GPS clock drivers are included. SMTP AUTH and SysLog error notification.
time server, windows time server, NTP, SNTP, NTP4.0, network time management, GPS clock,