GTK - GTK+ is a multi-platform toolkit for creating graphical user interfaces.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
Qt - Powerful, flexible and easy to use, Qt will help you not only meet your tight deadline, but also reduce the maintainable code by an astonishing percentage.
Autodesk 3DS Max - 3ds Max is software for 3D modeling, animation, rendering, and visualization. Create stunning game enrivonments, design visualizations, and virtual reality experiences.
JavaFX - JavaFX is the next step in the evolution of Java as a rich client platform.
ZBrush - ZBrush is a digital sculpting and painting software solution.