Blender is the open source software for 3D modeling, animation, rendering, post-production, interactive creation and playback. Available for all major operating systems under the GNU General Public License.

• Revolutionary non-overlapping and non-blocking UI delivers unsurpassed workflow
• Flexible and fully configurable window layout with as many screen setups as you prefer video sequence editing, character animation action editor, non-linear animation mixer, image/UV editing, file/image selection and file management
• Built-in text editor for annotations and editing Python scripts
• Consistent interface across all platforms
• A range of 3D object types including polygon meshes, NURBS surfaces, bezier and B-spline curves, metaballs, vector fonts (TrueType, PostScript, OpenType)
• ‘Smooth proxy’ style catmull-clark subdivision surfaces with optimal iso-lines display and sharpness editing
• Armature (skeleton) deformation with forward/inverse kinematics, auto skinning and interactive 3D paint for vertex weighting
• Non-linear animation mixer with automated walkcycles along paths
• Constraint system
• Vertex key framing for morphing, with controlling sliders
• Oversampling, motion blur, post-production effects, fields, non-square pixels
• Environment maps, halos, lens flares, fog
• Various surface shaders such as Lambert, Phong, Oren-nayar, Blinn, Toon
• Edge rendering for toon shading
• Procedural Textures
• Graphical editor for defining interactive behavior without programming
• Collision detection and dynamics simulation
• Playback of games and interactive 3D content without compiling or preprocessing
• Audio, using the SDL toolkit
• Multi-layering of Scenes for overlay interfaces
• Read / Write TGA, JPG, PNG, Iris, SGI Movie, IFF, AVI and Quicktime GIF, TIFF, PSD, MOV (Windows and Mac OS X)
• And much much more