Open Source Development Kit : Blender - 3D content creation

Is there any available open source 3d author software ?

Well, the answer is yes. Just keep your heavy breath away, with Blender. Here is the solution!

Blender is the free open source 3D content creation suite, available for all major operating systems under the GNU General Public License.

For more info about Blender, go to:

http://www.blender.org/

or go to download page:
http://www.blender.org/download/get-blender/