Space Engine - Space Engine is a realistic virtual Universe you can explore on your computer.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
OpenSpace - OpenSpace is open source interactive data visualization software designed to visualize the entire known universe and portray our ongoing efforts to investigate the cosmos.
Autodesk 3DS Max - 3ds Max is software for 3D modeling, animation, rendering, and visualization. Create stunning game enrivonments, design visualizations, and virtual reality experiences.
Celestia - Real-time 3D visualization of space
ZBrush - ZBrush is a digital sculpting and painting software solution.