Blender (Blender Foundation)

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Blender (Blender Foundation) is a free, open source, 3D studio for animation, modeling, rendering, and texturing offering a feature set comparable to commercial 3D animation suites. It includes features such as multi-resolution sculpting; retopology painting; 3D view texture painting; and other features. Blender is developed under the GPL and is available on all major platforms including Windows, OS X, Linux, BSD, Sun and Irix.