Koala is a plugin for export of model from Grasshopper to SCIA Engineer

3D Graphic Statics is a structural form-finding method for generating compression-only funicular structures.

Alpaca4D is a FEM solver for parametric structural analysis built on top of OpenSees. Static, Modal and Ground Motion Analysis.

Finite element meshing plugin for Grasshopper built on a half-facet data-structure supporting non-manifold meshes and mixed-dimensionalities.

Peregrine is a powerful structural layout optimization tool with a host of powerful editing and rationalization functions.

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

T-Rex can help you to create 3D models of reinforced concrete structures with Grasshopper (Rhino 6 or 7).

ixCube FEa finite element program for engineering structures