ACIS is a geometric modeling kernel developed by Spatial Technology, part of Dassault Systemes. ACIS is used by many CAD systems as a geometry kernel (AutoCAD, Inventor, ...) or as an interoperability format..). ACIS integrates wireframe model, surface, and solid modeling functionality with both manifold and non-manifold topology, and a rich set of geometric operations. ACIS extension is .sat (ascii format) or .sab (binary format).

CAD Interop distributes several solutions to view, exchange and validate ACIS files. We offer custom solution to meet every unique need: