NTPsec

Welcome to the NTPsec project - a secure, hardened, and improved implementation of Network Time Protocol derived from NTP Classic, Dave Mills’s original.

Software · ntpsec.org

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What NTPsec’s own pages say

What it says it doesWelcome to the NTPsec project - a secure, hardened, and improved implementation of Network Time Protocol derived from NTP Classic, Dave Mills’s original. ntpsec.org
Open sourceYes ntpsec.org

Each value is a quote AirStack found on the product’s own pages, read 2026-11-05. A missing field means AirStack has not found it on its pages.