Design Principles - An open source repository of design principles and methods
Time Buddy - Time Buddy brings a colorful world clock.
UXmeter - Like Tinder, but for finding the hottest web design in town
Time Zone Converter - Time Zone Converter is an online productivity tool to calculate exact time across time zones.
Atlassian Design - Design, develop, and deliver
World Clock - World Clock is an app that lets you see the time of any city in the world.