f.lux is makes the color of your computer's display adapt to the time of day, warm at night and like sunlight during the day.
Too many windows open to manage? Big display? Or sometimes getting lost in multiple monitors? This app is for you!
Darkness is a Chrome extension that provides dark themes for popular websites
Iris is software which makes Monitors healthy for the eyes.
With Iris you can reduce the Blue Light emitted from your screen for better sleep, reduce the Brightness of your screen without PWM and avoid eye pain.
The science behind Iris: