@it (reads atit) is a free GIS plugin for Grasshopper to parse the geospatial data sets.
Leopard is an open source mesh processing solution for grasshopper.
FractureHopper is an extension of GH for fractal math and chaos theory.
This plug-in is free, real-time analysis of the curve, surface of the bezier information to assist in the design of the most simple surface.
Fast and simple mesh extensions for Grasshopper.
Utilizing MIDI Controllers to drive Grasshopper. Use all those knobs, pads and sliders in MIDI controllers to update your script parameters
A Grasshopper plug-in that extends and enhances list and DataTree management practices.