Dimmer - A very small and free utility for Windows to reduce brightness on LCD/TFT screens.
DisplayFusion - DisplayFusion will make your multi-monitor life much easier.
CareUEyes - CareUEyes is an eye protection software for windows that comes with blue light filter, screen dimmer, and break reminder
Mizage Divvy - Divvy is an entirely new way of managing your workspace.
Red Moon - Screen filter for night time phone use.
WindowGrid - Quickly and easily layout windows on a dynamic grid using just the mouse.