Inventor, developed by Autodesk, is a 3D CAD software application used for mechanical design, documentation, and simulation. It combines parametric, direct, freeform, and rules-based design.

The software supports a wide range of design needs, including for machines, sheet metal, frames, tube and pipe, cable, harness, and more. It also includes powerful tools for model-based definition whereby manufacturing information can be embedded directly in 3D models.