CareUEyes - CareUEyes is an eye protection software for windows that comes with blue light filter, screen dimmer, and break reminder
LightBulb - Background application that adjusts screen gamma, making the colors appear warmer at night...
Simple Screen Shade - Description and screenshots of Simple Screen Shade.
Dimmer - A very small and free utility for Windows to reduce brightness on LCD/TFT screens.
Nocturne - Nocturne is simple app for switching a computer to night vision mode.
Red Moon - Screen filter for night time phone use.