Redshift

Color temperature adjustment tool

Redshift adjusts the color temperature of your screen according to your surroundings. This may help your eyes hurt less if you are working in front of the screen at night.

Development has moved to Github! Please find the latest release and report issues at https://github.com/jonls/redshift.

The color temperature is set according to the position of the sun. A
different color temperature is set during night and daytime. During
twilight and early morning, the color temperature transitions smoothly
from night to daytime temperature to allow your eyes to slowly
adapt.