Gammy Alternatives
Gammy is described as 'Adaptive screen brightness and temperature for Windows and Linux' and is a color temperature tool in the os & utilities category. There are more than 50 alternatives to Gammy for a variety of platforms, including Windows, Mac, Linux, Android and Wayland apps. The best Gammy alternative is f.lux, which is free. Other great apps like Gammy are Redshift, Solace, LightBulb and Red Moon.
Alternatives list
Lumen - magic auto brightness based on screen contents. You control Lumen simply by using your brightness keys - it'll automatically learn your preferences.
Away From Keyboard is an app that reduces eye strain with reminders to take a break.
Cost / License
- Paid
- Proprietary
Platforms
- Mac
- 52 wl-gammactl alternatives
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.
Cost / License
- Free
- Open Source (MIT)
Platforms
- Linux
- Wayland
W 
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.
Cost / License
- Paid
- Proprietary
Platforms
- Mac
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