Time Buddy - Time Buddy brings a colorful world clock.
Time Travel - Prebook rides for Uber
Time Zones Converter - Time Zones Converter is an application which as the name implies, is used for converting time zones.
TimeLord for Slack - Timezone converter bot for Slack
World Clock - World Clock is an app that lets you see the time of any city in the world.
Timezone.io - Keep track where and when your team is.