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An extension to AutoCAD LT to enables the ObjectARX API as with the standard version of AutoCAD.

A non-profit association of software developers who are working on applications around AutoCAD.

An interactive replacement of the DCL language for developing dialog boxes within AutoCAD, sold online.

An association of CAD customers and vendors committed to promoting Autodesk's AutoCAD DWG drawing file format as an open, industry-standard format for the exchange of CAD drawings.

A free software module that makes it possible to extend AutoCAD with the Python programming language, in a similar way as with AutoLISP.