wl-gammactl is described as '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' and is an app. There are more than 50 alternatives to wl-gammactl for a variety of platforms, including Windows, Mac, Linux, Android and Wayland apps. The best wl-gammactl alternative is f.lux, which is free. Other great apps like wl-gammactl are Redshift, LightBulb, Solace and Red Moon.
Free software for eye protection and more! It protects your eyes while you are working on the computer. Eye Saver has three main functions: blue light filter; eliminates the invisible flickering of the display backlight; reminds you to take breaks;
To schedule Night Light so it turns on automatically, select Start > Settings > System > Display > Night light > Night light settings.
Form 1 Hour Software by skrommel, it can dim the screen by applying a transparent gray layer on top of your opened applications
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.
iBrightness Tray is a little bit of a swiss army knife display tool as adjusting the brightness of your screen is just one of three main functions it has. The other two are turning on your screensaver at the click of a button and also the ability to turn off the display...
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.
Twilight Blue Light Filter is an optimal night filter that can be created to provide a warm light night screen for your eye care.
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