Comparable: Sketchup, Solidworks
AutoCAD is a commercial software application for 2D and 3D computer-aided design (CAD) and drafting — available since 1982 as a desktop application and since 2010 as a mobile web- and cloud-based app marketed as AutoCAD 360.
AutoCAD is used across a wide range of industries, by architects, project managers, engineers, designers, and other professionals. It is supported by 750 training centers worldwide as of 1994.
The native file format of AutoCAD is .dwg. This and, to a lesser extent, its interchange file format DXF, have become de facto, if proprietary, standards for CAD data interoperability. AutoCAD has included support for .dwf, a format developed and promoted by Autodesk, for publishing CAD data.