Vpaint
Try it! It’s very fun! 
Video + Manual
NOX Renderer Open source software

For any versions and for the free Sketchup Make
thx to Anton Synytsia 
Crazy physics animations can be possible! 
By Pierreaudouin

ippatsu 0.1
http://www9.plala.or.jp/minordaimyo/ippatsu.html
QCAD 3.6.4
http://www.qcad.org/
LevelEditor
https://github.com/SonyWWS/LevelEditor
Blender 2.71.6 Cycles + OSL
http://www.graphicall.org/110
Blender 2.72 Cycles Freestyle Rendering Test…


appleseed 1.1.0 alpha-22 modern, physically-based renderer
http://appleseedhq.net/
[Addon] blenderseed - appleseed Render Exporter