Cycles Renderer - Cycles is Blender’s ray-trace based production render engine and in development since 2011.
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
RenderMan - Advanced Technology from Pixar Animation Studios for Rendering VFX and Animation
Autodesk 3DS Max - 3ds Max is software for 3D modeling, animation, rendering, and visualization. Create stunning game enrivonments, design visualizations, and virtual reality experiences.
Kerkythea - Kerkythea is a freeware software that can produce high quality renders without spending a cent on software licensing.
ZBrush - ZBrush is a digital sculpting and painting software solution.