A FREE, easy to use implementation of the Network Time Protocol. ([Source Code](https://github.com/openntpd-portable/openntpd-openbsd/)) `ISC` `C`
openntpd.org
#time servers
3 tools curated in this category — including OpenNTPD, NTPsec, Chrony
Find on mySelectas all sites and tools related to time servers. This selection of 3 resources is reviewed and maintained by the community. The most popular include OpenNTPD, NTPsec, Chrony. Each tool comes with a review, tags, comparisons and alternatives to help you make the best choice.
A secure, hardened, and improved implementation of Network Time Protocol derived from NTP Classic. ([Source Code](https://gitlab.com/NTPsec/ntpsec)) `BSD-2-Clause/Custom` `C`
ntpsec.org
A versatile implementation of the Network Time Protocol (NTP). ([Source Code](https://gitlab.com/chrony/chrony)) `GPL-2.0` `C`
chrony-project.org