3D CAD software for mechanical design Inventor® 3D CAD software offers an easy-to-use set of tools for 3D mechanical design, documentation, and product simulation. Digital Prototyping with Inventor helps you design and validate your products before they are built to deliver better products, reduce development costs, and get to market faster. Features Software for mechanical design and simulation View demo videos of Inventor® and Inventor® Professional 3D CAD modeling software products to learn about features for advanced mechanical engineering design, finite element analysis, motion simulation, data management, routed system and mold design, as well as enhanced CAD productivity.