Grasshopper Definitions: Remap Numbers, Graph Mapper, Domains, Find Similar Member, Jitter Strength, Image Sampler, Vector Angle.

The RhinoPolyhedra plug-in for Rhino allow you to create over 650 different polyhedral shapes.

Includes general purpose components in math and geometry and fulfills missing necessities in Grasshopper.

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

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

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

Opossum offers some of the best performing optimization algorithms in Grasshopper: model-based RBFOpt and RBFMOpt and evolutionary CMA-ES and NSGA-II.

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