Autodesk ShapeManager is a 3D geometric modeling kernel used by Autodesk Inventor and other Autodesk products that is developed inside the company. It was originally forked from ACIS 7.0 in November 2001, and the first version became available in Inventor 5.3 in February 2002.On the day of the announcement, VP of Autodesk, Robert Cross, denied that the genesis of ShapeManager was the purchase by Dassault Systèmes of ACIS from Spatial Corp in July the previous year, though industry experts commented on Autodesk's exposure to dependence on technology controlled by its main competitor (Dassault owns SolidWorks).