GPU Based Renderers

http://www.nvidia.com/object/cuda_home_new.html

http://www.cgchannel.com/2010/05/octane-render-gpu-based-rendering/

Octane

http://www.refractivesoftware.com/

Arion

http://www.randomcontrol.com/arion

ilustrated in this video here and here

Holomatix Rendition

http://www.holomatix.com/

Indigo Renderer

http://www.indigorenderer.com/node/1012

VRay RT 3DS Max Plugin

http://www.chaosgroup.com/en/2/vrayrt.html

iRay

http://www.mentalimages.com/products/iray.html

FurryBall Maya Plugin

Keyshot 2

http://www.keyshot.com/keyshot2/

Bunkspeed Shot

http://www.bunkspeed.com/shot/

IBM Cell Interactive Raytracer

http://www.alphaworks.ibm.com/tech/irt