Dimmer - A very small and free utility for Windows to reduce brightness on LCD/TFT screens.
Red Moon - Screen filter for night time phone use.
Calise - Calise is an open-source Camera Light Sensor developed using the python language to determine ambient brightness and configure the right brightness for the screen by using a camera.
myPoint Shade - Stop burning your eyes! myPoint Shade is caring for your eyes' comfort.
CareUEyes - CareUEyes is an eye protection software for windows that comes with blue light filter, screen dimmer, and break reminder
CF.lumen - CF.lumen is a powerful app for Android that adjusts the colors by detecting the position of the sun or according to custom settings.