The 3D ACIS® Modeler (ACIS) is a 3D modelling engine owned by Spatial Corp (formerly Spatial Technology). ACIS is used by many software developers industries such as computer-aided design, (CAD), Computer-aided manufacturing (CAM), Computer-aided engineering (CAE), Architecture, engineering and construction (AEC), Coordinate-measuring machine (CMM), 3 D animation, and shipbuilding. ACIS provides software developers and manufacturers the underlying 3D modeling functionality.