Rhino3d
Introduction
Rhinoceros 3D, also known as Rhino3D, or just Rhino, is a computer-aided design software. Rhino is used by machinists, architects, industrial designers, jewelers and others. It is known for it’s precise modeling as well as a large amount of features around freeform geometry.
Rhino is capable of importing and exporting many 2D and 3D file formats, making it an option in many workflows.
Grasshopper is a plugin within Rhino, which has become an integral part that is shipped by default. It is a nodes-based programming enviroment and has itself been extended by countless plugins.