Ladybug and Honeybee are open source environmental plugins for Grasshopper to help designers create an environmentally-conscious architecture

A collection of geometry editing tools and general utilities for grasshopper developed at SHoP Architects.

Panda_GH_2.6.0.0 is coming!

ShapeDiver.com lets you upload and run Grasshopper definitions online. This plugin contains several components to help you set up your model.

Create quad meshes using Instant Meshes and QuadriFlow.

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

Rhino Mesh NGon methods for Grasshopper

Build augmented reality apps in Rhino and Grasshopper