Blender is the free open source 3D content creation suite, available for all major operating systems under the GNU General Public License.
Blender is the free, open source 3D application for modeling, animation, rendering, compositing, video editing and game creation. Blender can be used freely for any purpose, including commercial use and distribution. It's free and open-source software, released under the GNU GPL licence. The entire source code is available on the official website.