Blender External Render Engines

Ive been trying out SunFlow Indigo and Yafray

im like SunFlow and Indigo

but does any one know a really good one for free

although Indigo and Sunflow are pretty much the best

Pov, Kerkythea, lux…

Pixie, 3Delight, Aqsis
(you need Mosaic script to fully take advantage of it)