ControlMyMonitor - View and modify the settings of your monitor from command line or GUI
CareUEyes - CareUEyes is an eye protection software for windows that comes with blue light filter, screen dimmer, and break reminder
Dimmer - A very small and free utility for Windows to reduce brightness on LCD/TFT screens.
Win10_BrightnessSlider - this app puts a Monitor Brightness icon to on Taskbar Tray. So you can access it with 1 click.
myPoint Shade - Stop burning your eyes! myPoint Shade is caring for your eyes' comfort.
Monitor Bright - Monitor Bright reduces with a simple trick the monitor brightness.