CAD Assistant

CAD Assistant is an offline 3D viewer and converter that handles a wide range of CAD and mesh formats. It provides basic model visualization, conversion between formats, and the ability to view mesh data with mapped quantities. The application leverages the XDE component of Open CASCADE Technology and supports formats such as STEP, IGES, BREP, glTF, JT, PLY, STL, OBJ, 3DM, DXF, SAT, and XT, preserving geometry, assembly structure, colors, names, and other metadata where available.

The tool is targeted at engineers and other professionals who need to inspect, exchange, or repurpose 3D data without requiring a full CAD suite. Its simple, intuitive interface and offline operation make it suitable for quick checks and batch conversions on desktop and mobile platforms. The software is distributed under a free‑for‑personal‑and‑commercial‑use license.

Built on open‑source libraries including Open CASCADE Technology, Qt, FreeType, and FreeImage, CAD Assistant runs on macOS (Intel and ARM), Windows, Linux (AppImage), Android, and iOS. The stable release series offers a lightweight, cross‑platform solution for everyday 3D data handling tasks.