[via: http://www.rhinoparametrics.com ]
Paramétric & Associative Design, embeded in RHINO
RhinoParametrics eases and accelerates your innovation capacity from early stage of your project.The upsteam objects parametrisation allow very large amount of variant 3D assemblies possible tests, streamlining design optimization. Your ROI ( Return On Investment ) with RhinoParametrics is boosted.

Automatic transformation of Rhino objects into parametric objects. Ergonomic and intuitive, easy to learn quickly.
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The realtime render proved useful for design demonstration. Automatic update of render scene is the key feature. Now a new realtime renderer is available for productive usage.
VSR – realtime render plug-in for rhino which allows to switch from modeling mode to high quality visualisation mode. It can be combined with other Rhino plugins as BongoTM and new VSR modeling and analysis plugins currently under development.
Demo-Video
Download
List of supported graphics cards (My graphic card is not involved in the list,
)
You can have a free trial for 30 days.

LEDAS Improves Assembly Design and Kinematic Simulation in Rhino and Announces History-Free Geometry Editing.

LEDAS, an independent provider of variational design tools for different CAD platforms, announces that the updated version of its Driving Dimensions plugin for Rhino. This makes it possible to create Kinematic Simulation in Rhino.
Download the plug-in for Rhino
Read more from drivingdimensions.com

David Rutten wrote this plugin to import RealFlow data back into Rhino.
Download the plugin.
Examples:
Flooded house
Candy commercial
Rhino roadkill
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Download Realflow