ntime is almost great as a client, but it's so minimal it doesn't have enough necessary features and it's unlikely to be anywhere as accurate as chrony or ntpd.

ntime is almost great as a client, but it's so minimal it doesn't have enough necessary features and it's unlikely to be anywhere as accurate as chrony or ntpd. openntpd falls in the same boat. The issue of ntpd was/is security and possibly excessive configuration.