RhinoPiping LT is a free piping plugin. RhinoPiping Pro has many additional features, including Ifc export for AEC, and multiple iso generator (Pro+)

EvoluteTools T.MAP for Rhino 5 and 6 provides re-meshing using pure quad or triangle meshes, and texture mapping using quad or triangle patterns

Analysis Tools for Rhino

Concha is a Rhino3D plug-in for the numerical analysis of shell structures based on the Finite Element Method.

Parametric Ship Structural Design

MeshPaths is primary Grasshopper component for finding Geodesic paths (lines) on meshes.

The Rhinoceros solution for EDM and cutting toolpath

Software for layout optimization of 2D and 3D geometries for all kind of shapes