SheepIt Render Farm - A free distributed render farm for Blender
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
TurboRender - Rendering at your workstation?
Autodesk 3DS Max - 3ds Max is software for 3D modeling, animation, rendering, and visualization. Create stunning game enrivonments, design visualizations, and virtual reality experiences.
RebusFarm - RebusFarm is a 3D rendering software.
ZBrush - ZBrush is a digital sculpting and painting software solution.