Lumen - magic auto brightness based on screen contents. You control Lumen simply by using your brightness keys - it'll automatically learn your preferences.

f.lux is described as 'Software that makes the color of your computer's display adapt to the time of day, warm at night and like sunlight during the day' and is a leading color temperature tool in the system & hardware category. There are more than 50 alternatives to f.lux for a variety of platforms, including Windows, Mac, Linux, Android and Wayland apps. The best f.lux alternative is Redshift, which is both free and Open Source. Other great apps like f.lux are LightBulb, SunsetScreen, RedshiftGUI and Twilight.
Lumen - magic auto brightness based on screen contents. You control Lumen simply by using your brightness keys - it'll automatically learn your preferences.

Inspired by Redshift, Blueshift adjusts the colour temperature of your monitor according to brightness outside to reduce eye strain and make it easier to fall asleep when going to bed.
Trouble Sleeping? Device screen too bright even on the lowest brightness setting? Want to give your phone a warm look instead of that eye straining blue gaze you see at night? EasyEyes is the solution. By changing your device's color temperature, EasyEyes reduces eye strain...




EasyEyes by Autosofted is an app that can do what f.lux does and more. F.lux only allows the user to adjust temperature, while EasyEyes allows both temperature AND brightness adjustment. EasyEyes allows the user to create multiple transition times.

Velis Auto Brightness is a pretty powerfully adjustable auto-brightness app for your android device.




Small GTK GUI application to set contrast, brightness and gamma for wayland compositors which support the wlr-gamma-control protocol extension. Basically this is the example from here: https://github.com/swaywm/wlroots/blob/master/examples/gamma-control.

A Python program that calculates ambient brightness and sets screen's correct backlight using a camera.

NightTone makes your screen more comfortable, enjoyable and healthier by shifting the colors of your display to a warmer, eye-friendly palette. It makes you sleep and feel better.




Shifty was made to expand the capabilities of the built in Night Shift feature in macOS. You can disable Night Shift for specific apps and custom time periods. It also provides easy access to a slider to fine tune your color temperature.

Setting the color temp of the screen really only requires about 40 lines of C (80 or so all inclusive). sct is a crude utility which does roughly that. I’d say exactly that, but some of the calculations aren’t actually exact.