Blender is the free open source 3D content creation suite, available for all major operating systems under the GNU General Public License.
a) Interface :
Revolutionary non-overlapping and non-blocking UI delivers unsurpassed workflow
Flexible and fully configurable window layout with as many screen setups as you prefer
Undo support on all levels
Anti-aliased fonts with international translation support.
b) Rigging :
Fast skeleton creation mode
Interactive 3D paint for vertex weighting
Fast envelope based skinning
Automatic Skinning that really works (heat equilibrium based)
Mirror editing (bone creation and weight painting).
c) Animation :
Armature (skeleton) deformation with forward/inverse kinematics with pole target support
Auto IK allows posing FK chains easily
Non-linear animation editor for mixing individual actions created in Action editor
Automated walkcycles along paths
Animated constraint system
A range of 3D object types including polygon meshes, NURBS surfaces, bezier and B-spline curves, metaballs, vector fonts (TrueType, PostScript, OpenType).
Very fast Catmull-Clark subdivision surfaces with optimal iso-lines display and sharpness editing .
Full multiresolution sculpting capabilities with 2D bitmap/3D procedural brushes (Paint, Smooth, Pinch, Inflate, Grab) supporting symmetry.
e) Shading :
Diffuse shaders such as Lambert, Minnaert, Toon, Oren-Nayar, Lambert
Specular shaders such as WardIso, Toon, Blinn, Phong, CookTorr
Node editor for creating and mixing complex materials
PyNodes: write your own Python shaders with realtime feedback, no need to compile
Material previews rendered by main render engine
How to Install :
Go to terminal and run the following command .
sudo apt-get install blender
After Installation , Go to Applications –> Graphics ->Blender .