AutoCAD is a suite of CAD software products for 2 and 3dimensional design and drafting, developed and sold by Autodesk, Inc..
Modern AutoCAD includes a full set of basic solidmodeling and 3D tools, but lacks some of the more advanced capabilities of solid modelling applications. AutoCAD can coexist with such products as a 2D drafting tool. AutoCAD is a vector graphics drawing program. It uses primitive entities such as lines, polylines, circles, arcs, and text as the foundation for more complex objects.
AutoCAD supports a number of application programming interfaces (APIs) for customization and automation. These include AutoLISP, Visual LISP, VBA, .NET and ObjectARX. ObjectARX is a C class library, which was also the base for products extending AutoCAD functionality to specific fields, to create products such as Autodesk Architectural Desktop, AutoCAD Electrical, or thirdparty AutoCADbased applications.
AutoCAD’s native file format, AutoCAD DWG, and to a lesser extent, its interchange file format, DXF, have become de facto standards for interchange of 2D CAD data. In 2006, Autodesk estimated the number of active DWG files to be in excess of one billion. In the past, Autodesk has estimated the total number of DWG files in existence to be more than three billion.
AutoCAD currently runs exclusively on Microsoft desktop operating systems. Versions for Unix and Macintosh were released in the 1980s, but these were later dropped. AutoCAD can run on an emulator or compatibility layer like Virtual PC or Wine, keeping in mind the performance issues that can arise when working with 3dimensional objects or large drawings. AutoCAD exists in 14 language localizations, including many European and Asian languages
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