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!
Smarter controls and a new Adaptive algorithm for your external displays.
• the brightness/contrast can respond to the built-in light sensor readings
• use the brightness keys to adjust external monitor's brightness