F.lux

F.lux screenshots

Adapts the color of your screen to the time of day to reduce eyestrain
Settings
F.lux 4.8 : Settings

Alternative downloads

LightBulb
Reduces eye strain at night by automatically adjusting display gamma.
1.6.3.6
FREE
Good Night PC
Small and effective utility to shutdown your computer.
1.9
Adapt It
A computer program that helps translate texts between related languages.
6.2.0
FREE