Open-source combinatorial toolkit for discrete design. Offers tools to quickly generate geometry- and data-driven aggregations of generic parts.

Box2D is a 2D rigid body simulation tool for Grasshopper. It uses Box2D physics engine and a C# wrapper from colgreen/box2Dx. 

Kangaroo is a Live Physics engine for interactive simulation, form-finding, optimisation and constraint solving.

Create accurate Metric and English Bolts and Nuts in Rhinoceros

Ivy is a Grasshopper add-on for mesh segmentation and fabrication.

Telepathy is a wireless sender/receiver that allows you to send Grasshopper data to anywhere on the canvas using a simple key naming interface.

Welcome to Human for Grasshopper! Human extends Grasshopper's ability to create and reference geometry including lights, blocks, and text objects.

Clipper is a 2D polygon Clipper offering polygon boolean operations (clipping): Intersection, Join, Difference, and robust polygon offsets.