NightTone is described as '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' and is a Color Temperature Tool in the OS & Utilities category. There are more than 25 alternatives to NightTone for a variety of platforms, including Windows, Mac, Linux, Android and Android Tablet. Most alternatives are Color Temperature Tools and Screen Dimmers. The best alternative is f.lux, which is free. Other great apps like NightTone are Redshift (Free, Open Source), LightBulb (Free, Open Source), Gammy (Free, Open Source) and RedshiftGUI (Free, Open Source).
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;.
Iris is software which makes monitors healthy for the eyes. With iris you can reduce the blue light emitted from your screen for better sleep, reduce the brightness of your screen without PWM and avoid eye pain.
CareUEyes is a very simple but useful program when it is about your eye care. The program comes with a very simple and clean interface and needs to technical knowledge. Even a novice computer user can download and use it easily.
Applies a shade that acts as a dimmer to ensure your eyes don't hurt. Far more powerful than Android's built-in brightness setting. Great for low-light gaming, web browsing, and eBook reading. It even saves battery life for AMOLED displays!
Synchronize your external monitor brightness with built-in display.
Application reads current brightness of your built-in display and passes it to external monitors via DDC interface.
You can adjust brightness by menu in system status bar.
Kumux is a dynamic circadian color scheme for code editors and other software. It adjust color temperature, color hues, contrast and brightness levels throughout the day based on the position of the sun.