Monitorian - Monitorian is a Windows desktop tool to adjust the brightness of multiple monitors with ease.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Twinkle Tray - Easily manage the brightness of your monitors in Windows from the system tray.
Autodesk 3DS Max - 3ds Max is software for 3D modeling, animation, rendering, and visualization. Create stunning game enrivonments, design visualizations, and virtual reality experiences.
Dimmer - A very small and free utility for Windows to reduce brightness on LCD/TFT screens.
Cinema 4D - Cinema 4D is a 3D modeling, animation, motion graphics and rendering application.