Blender Portable is the open source software for 3D modeling, animation, rendering, post-production, interactive creation and playback packaged as a portable app, so you can do your rendering on the go.

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
· Any window space can be easily switched to any window type (curve editor, NLA, 3D view etc)
· Built-in text editor for annotations and editing Python scripts
· Graphical user interface for Python scripts
· Custom themes
· Consistent interface across all platforms

Modeling:
· 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
· Modifier stack deformers such as Lattice, Curve, Armature or Displace
· Mirror modifier with middle vertices clipping and automatic deletion of inner faces
· Non destructive real time Boolean and Array modifiers
· Mesh modeling based on vertex, edge and/or face selection
· Smooth soft selection editing tools for organic modeling
· Python scripting access for custom tools

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)
· Double Quaternions reduce shrinking and other bone deformation errors
· Volume deformer uses a mesh cage to deform complex meshes with great results
· Bone layers and colored groups for better rig organization
· B-spline interpolated bones; forget about elbow twists
· Constraint stack for IK solver setup and other constraints
· PyConstraints; if you need something not yet implemented code it in python with real time feed back, no compiling needed

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
· Vertex key framing for morphing, with controlling sliders
· Edit and create new blendshapes from existing targets
· Character animation pose editor
· 'Ipo' system integrates both motion curve and traditional key-frame editing
· Audio playback, mixing and editing support for sound synchronisation
· Timeline offers fast acces to many playback functions, autokey, help markers
· Python scripting access for custom and procedural animation effects

Rendering:
· Very fast inbuilt raytracer
· Oversampling, motion blur, post-production effects, fields, non-square pixels
· Tile-based and fully threaded
· Render layers and passes
· Render baking to UV maps and object to object baking (full render, ambient occlusion, normals, textures)
· Render engine tightly integrated with the node compositor
· Halo, lens flares and fog effects
· Vector motion-blur post-process effect (using node compositor)
· Realistic defocus (DOF) post-process effect (using node compositor)
· Edge rendering for toon shading
· Interactive preview rendering panel in any 3d view
· Ambient Occlusion
· Radiosity solver
· Export scripts available for external renderers such as Renderman, Povray, Virtualight, Lux, Indigo and V-Ray - See Resources for a full list.