Clocks - A minimal world clock app for your Mac's menubar
Time Buddy - Time Buddy brings a colorful world clock.
Clock mini - Simple clock app in the Dock
Time Zone Converter - Time Zone Converter is an online productivity tool to calculate exact time across time zones.
Clocker - Keep track of people in different time zones
World Clock - World Clock is an app that lets you see the time of any city in the world.