FlowBox

[kaizer_soze]

http://vimeo.com/113706005
http://flowbox.io/flowbox-features/

Flowbox bases on the idea of non destructive workflow, allowing for high-end image and video post-processing simply by connecting nodes.

Including 3D Compositning with true 3D workspace (comming soon)

[nDman]

Interface is very similar to Houdini!
It seems they try to make something like Houdini for Post-production?