Comment Comment by jerdfelt There is NTP the protocol[1], and there is NTP the implementation[2].While the implementation is popular, there are alternatives. There is also OpenNTPd, chrony and ntimed for instance.There are also alternatives to the NTP protocol too, such as PTP and SNTP.[1]https://www.ietf.org/rfc/rfc5905.txt [2]http://www.ntp.org/ parent jerdfelt 10 years ago
While the implementation is popular, there are alternatives. There is also OpenNTPd, chrony and ntimed for instance.
There are also alternatives to the NTP protocol too, such as PTP and SNTP.
[1]https://www.ietf.org/rfc/rfc5905.txt [2]http://www.ntp.org/