Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Every Time Zone - Online tool for keeping up with times around the world.
The Rock Clock - A motivational alarm clock from Dwane 'The Rock' Johnson
Time.is - exact time in any location
Integrator.io iPaaS by Celigo - Next-Generation iPaaS integration platform
World Time Buddy - Effortless time conversion and world time.