GH for Mac A very early alpha version of Grasshopper for Mac is available in the RhinoWIP for testing and feedback. Aviary metahopper Welcome to MetaHopper - The plugin that lets you control Grasshopper with Grasshopper! Karamba <strong>karamba3d</strong> is an interactive, parametric finite element program. It lets you analyze the response of 3-dimensional beam and shell structures under arbitrary loads. Human UI Human Welcome to Human for Grasshopper! Kangaroo Kangaroo is a Live Physics engine for interactive simulation, optimization and form-finding directly within Grasshopper.