
Description: SunsetScreen is a free open source software that changes the color temperature of your computer screen to match the sun cycle throughout the day. It slowly adjusts from a cool blue light in the morning to a warm orange light in the evening to reduce eye strain.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Twilight is a free open source software that adjusts your screen to reduce eye strain. It makes the color of your screen adapt to the time of day, reducing the amount of blue light emitted. This helps prevent disruption of your circadian rhythms and improves sleep.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API