Here is a list of 3D rendering engines to create awesome graphics.
Some are free, while others are paid software (offering a a limited trial period).
Some of the rendering engines are capable of importing various 3D formats or integrate them directly into modelers.
Here's our selection of free or open source softwares:
Pixar studios is now offering a non commercial version of RenderMan for free. RenderMan is the famous rendering software Pixar has been using since the 80s for its creation. This is a 3D rendering engine that allows you yo create photorealistic results.
The software is not necessarily easy to handle as it was primarily designed for professionals. A discussion forum is available for RenderMan users: