MegaCAD 3D is an innovative 2D or 3D design and modeling software that offers innovative solutions for drafting, solid and surface modeling system. It is easy-to-use yet impressively powerful, combines the ease-of-use of the direct history-free approach, and the benefits of parametric history-based modeling. MegaCAD has powerful solid modeling system, which allows the sharing of common data structures, combining some form of a model into one that is memorable, and each design can be wholly or partly implemented in the surface modeler.