BullAnt is a Rhino3d/Grasshopper plug-in primarily for Architects and Engineers (but also other Rhino/Grasshopper users) featuring computational

Clipper is a 2D polygon Clipper offering polygon boolean operations (clipping): Intersection, Join, Difference, and robust polygon offsets.

Add sequentially numbered dots or text to the Rhino scene.

Caad4Rhino is a python package whose purpose is to provide computer aided architectural design tools in rhino 3d software.

[Work In Progress] Condor is a plug-in that can scan the contours of scrap materials from CNC cutters, and export them into Rhino as contours.