[mlichvar]

The major Linux distributions replaced ntp with ntpsec. A better question would be who is still running ntp. I know about FreeBSD and NetBSD.

ntpsec as a project seems to be doing ok. They are releasing new versions, fix reported issues, accept patches, and develop the code publicly. While ntp still has a huge list of acknowledged but unfixed CVEs.

[Palomides]

is that true? ubuntu and red hat for example use chrony or systemd-timesyncd

[tptacek]

Which distributions use ntpsec?

[mlichvar]

Current Debian, Ubuntu, Fedora, RHEL/CentOS (EPEL) have an ntpsec package, but no ntp package. It's not used by default (that's chrony on most of the distributions), but the users can install it and use it.

[akerl_]

Thats… not the same thing.