ACIS是一套三维几何造型组件软件，适用于开发精密工程应用软件。这套软件是由Spatial Corp于1986年开发上市，让工程软件开发者，能在电脑上仿真出三度空间的物体，并进行实体设计、运算、分析与处理。

使用ACIS这套组件软件而开发的应用软件种类，包括了下列主要产业：

ACIS三维几何造型组件软件采用开放式、面向对象语言C++架构。软件开发者可以将ACIS集成在各自的软件界面之中，开发出独特的工程应用软件。产业用户使用这些应用软件，来辅助产品设计、分析，加速产品开发进程。汽车、飞机、电气、建筑等等，适用范围非常广泛。

The 3D ACIS Modeler (ACIS) is a geometric modeling kernel developed by Spatial Corporation (formerly Spatial Technology), part of Dassault Systemes. ACIS is used by many software developers in industries such as computer-aided design (CAD), computer-aided manufacturing (CAM), computer-aided engineering (CAE), architecture, engineering and construction (AEC), coordinate-measuring machine (CMM), 3D animation, and shipbuilding. ACIS provides software developers and manufacturers the underlying 3D modeling functionality.