RhinoGears is a plugin that can be used to generate custom gears, including involute gears, racks, bevel gears and helical gears.

Runs sDNA from Grasshopper, on Rhino and Grasshopper geometry and data.sDNA is a world leading tool for Spatial Design Network Analysis.

Conduit is an open source plug-in authored by Proving Ground that enables designers to create custom data visualizations and heads up displays.

Puma is a plugin for Rhino 3D and Grasshopper. It enables the use of CityEngine CGA rules for the generation of procedural buildings inside of Rhino or Grasshopper at runtime.

这是由兰亭设计，林师兄制作的景观插件。它是开源的。 This is a landscape plug-in designed by Lanting and made by Linluz.It's open source！

Turtle is an open-source plug-in to handle ngon meshes in Grasshopper. It is though to be a common language among any plug-in that needs fast and m

Megarachne is an open-source lightweight plug-in for Grasshopper.

Plugin for using XBox controllers as an Input Device in Grasshopper

Honeycomb generates planar tilings and topological interlockings. It enables the creation of patterns through symmetric transformations, each derived from the 17 wallpaper groups.

Fractals is an Open Source plugin for Grasshopper that allows users to create various types of mathematically generated fractals.

This is the first release of free and open source add-on of NERO | Networking Environmental Robotics. NERO is a collaborative project lead by

Annotates components with desired language

Crash exists to make Multi-user across Rhino platforms easy and accessible to developers and users.

UPDATED to 2.0 -- Mallard is a Plugin to connect Grasshopper to Airtable.