CAD Assistant is a free offline 3D CAD viewer and converter designed primarily for Windows users. It supports a variety of file formats, including STEP, IGES, and STL, making it a versatile tool for engineers and designers. The software provides an intuitive interface that allows users to easily navigate through 3D models and perform essential operations such as viewing, measuring, and converting files without the need for an internet connection.

In addition to its viewing capabilities, CAD Assistant offers useful features such as model manipulation and customization options, enhancing the user experience. Its support for multiple CAD formats ensures compatibility with a wide range of applications, making it an essential utility for professionals working in the field of computer-aided design. Overall, CAD Assistant stands out as a reliable tool for anyone needing to view and convert CAD files efficiently.