Blamder is a modification to Blender the free an open source 3D creation suite for creating assets for Halo. Support for all the existing Blender 3D pipeline-modeling, rigging, animation, simulation, rendering, compositing, motion tracking and video editing.
Blamder is licensed under the GNU General Public License, Version 3.
Blender as a whole is licensed under the GNU General Public License, Version 3. Individual files may have a different, but compatible license.
See blender.org/about/license for details.