Mitchell Gaff had been convicted of a violent attack on a woman in 1979 and the brutal rape of two sisters in 1984. Forty years later, detectives proved he's a serial killer.

We tested Toggl Track, Timely, 7pace, QuickBooks Time, and ActivityWatch to find the best time-tracking tools for freelancers and remote teams.

Learn how Network Time Protocol (NTP) works, why accurate time matters, how NTP calculates clock offset and network delay ...