Lumen is described as '- magic auto brightness based on screen contents. You control Lumen simply by using your brightness keys - it'll automatically learn your preferences'. There are more than 25 alternatives to Lumen for a variety of platforms, including Windows, Mac, Android, Linux and Android Tablet. The best alternative is f.lux, which is free. Other great apps like Lumen are Redshift (Free, Open Source), LightBulb (Free, Open Source), RedshiftGUI (Free, Open Source) and Gammy (Free, Open Source).
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.
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;.
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!
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.
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.