Cost / License
- Free
- Open Source (MIT)
Application type
Platforms
- Mac
- Windows
- Linux
- Chrome OS
- Software as a Service (SaaS)

Twilight Blue Light Filter is described as 'Optimal night filter that can be created to provide a warm light night screen for your eye care' and is a color temperature tool in the os & utilities category. There are more than 10 alternatives to Twilight Blue Light Filter for a variety of platforms, including Linux, Windows, Mac, Wayland and Android apps. The best Twilight Blue Light Filter alternative is f.lux, which is free. Other great apps like Twilight Blue Light Filter are Redshift, LightBulb, Red Moon and Twilight.

Do you use your mobile phone after sunset? Do you use your phone within three hours of your bed time? If yes, then your device might be taking your sleep away. Bluelight from your mobile screens sends a signal to brain to wake up, and makes it difficult for us to sleep at night.


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.
SunshinePal is your daily sunlight companion designed to help you track your exposure, set healthy goals, and reconnect with nature for better sleep and mood.




EyeAway is a beautiful, privacy-first macOS app that helps reduce digital eye strain using the proven 20-20-20 rule. Every 20 minutes, look 20 feet away for 20 seconds - your eyes will thank you.




Experience a more comfortable screen during nighttime use with LumiGuard: Night Mode. Adjust your display's color temperature and brightness to reduce eye discomfort in low-light environments.




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.
