Maxwell Render 1.0

Based on the physics of real light, Maxwell is capable of photo-real output with only one drawback: long render time.
Maxwell has plug-ins for almost any 3d application, but the stand-alone application Maxwell Studio gives maximum control.
Maxwell renderings are grainy. Sample levels indicate the quality of the rendering. Read more...
Render time for each image is 60-80 hours!!

Pros:
Superior image quality with almost no tweaking.
Good, extensive material library.
Multilight + exposure while rendering.

Cons:
Long render time - not applicable for animations.
Maxwell Studio interface differ from most 3d applications.