Dynamic 3D Sectioning and 2D Layouts for Rhino Helps create sections that update with model changes.  Sections can create outline curves,

Firefly offers a set of software tools dedicated to bridging the gap between Grasshopper (a free plug-in for Rhino) and micro-controllers like the Ard

Lattice structure tools for Grasshopper3D

KUKA|prc enables you to program and simulate industrial robots directly out of a parametric modelling environment.

Crane is a Grasshopper plugin to design origami products. This software focuses on design, rigid folding simulation, form-finding, and fabrication.

Jellyfish is a Grasshopper plugin to provide an intuitive and fast way to model, manipulate, and visualize implicit geometries.

Biber is a plug-in for Rhino-Grasshopper which enables Parametric Joinery.

OpenBIM addon for Rhino and Grasshopper enabling IFC (Industry Foundation Class) model to be generated and exchanged to ArchiCAD, Revit, Bently, Tekla