Software that extends AutoCAD for greater or more specialized functionality, or for improved work efficiency. This includes external software that interacts with AutoCAD or handles DWG/DXF/DWF files.
Applications for use in the AEC and related industries.
Applications that read, write and modify AutoCAD files, or use AutoCAD to edit several files successively.
Tools and (often small) programs for improving the effectiveness of the daily work with AutoCAD, that are not related to a specific industry or field of application.