CAD Software refers to a type of technology used in the design and drafting of 3D objects. It includes software programs that aid in the creation, modification, analysis, or optimization of a design. This category is deeply intertwined with 3D printing, covering aspects such as the filaments used by 3D printers and various accessories that enhance the 3D printing process. It is a critical component in various fields of engineering, architecture, and even in the creation of animated graphics.