Clocker - Keep track of people in different time zones
T-Clock Redux - T-Clock Redux in an enhanced fork of Stoic Joker's T-Clock 2010 with ISO week number support...
World Clock iOS 8 Widget - Check the time, anytime. Just pull down Notification Center.
Fitari Fitness Alarm Clock - The Fitness Alarm Clock will wake you up by making you stand up and do a number of fitness...
Dato - Better menu bar clock with calendar and time zones
ClocX - ClocX - freeware analog clock for Windows desktop with many features like calendar, alarms, skins, antialiasing and transparency.