Show HN: Nasscad – local-first 3D CAD for browser and Windows

Category: devtools

Tags: cad, 3d-modeling, step, occt, local-first

Score: 7.8/10 (Innovation: 6, Technical: 9, Documentation: 8, Utility: 8)

NASSCAD is a local-first 3D CAD application for browser and Windows, built on the powerful Open CASCADE Technology (OCCT) kernel. It offers STEP import/export, assembly browsing, PMI/GD&T support, and scriptable modeling, making professional-grade CAD accessible without cloud dependency. The combination of a mature C++ geometry engine with a web-based interface is noteworthy.

Target audience: mechanical engineers, CAD developers, and hobbyists needing accessible 3D modeling tools

Repository: https://www.nasscad.com/NASSCAD_V4_7_0.htm · C++ · LGPL-2.1 · 3082 stars

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