Blender 2.77a recently released, is a free and open source 3D animation suite. It supports the entirety of the 3D pipeline—modeling, rigging, animation, simulation, rendering, compositing and motion tracking, even video editing and game creation. This latest update Blender 2.77a comes with a number of important bug fixes. Blender 2.77a changelog Cycles: Better Subsurface Scattering, GPU support for Smoke/Fire and Point Density. Grease pencil stroke sculpting and improved workflow.