Rhinoceros 3D: Modeling in 3D is the process of creating a mathematical representation of an object’s surfaces. Rhino is a 3D modeling software that provides tools for creating, displaying and manipulating these surfaces. A surface in Rhino is fundamentally a NURBS based geometry, which is known by its flexibility to model any shape from 2D line to the most complex 3D free form organic surface or solid. Rhino is used in Marine, Aerospace, Automobile, Exterior design, Product design and many other applications.
 

Grasshopper: is a visual programming language developed by David Rutten at Robert Mcneel and Associates, It runs within the Rhinoceros 3D CAD applications. If Rhino alone offers the opportunity to 3D model objects, then Grasshopper and Rhino, in tandem, offer the opportunity to define parametric control over the model. Together they offer the capability to explore generative design workflow, a design method in which 2D and 3D forms are generated by set of rules and relations. Grasshopper has the power to explore design possibilities through quick, variable and desirable outcomes.