NASSCAD is a fully parametric 3D CAD modeler that runs as a single HTML file. No install. No account. No cloud. No subscription.
4.3.0 adds STEP AP242 B-Rep import/export (ISO 10303) — tested on real SolidWorks, Creo, and NX exports. 99% compatibility in practice.
Under the hood: Boolean CSG via Manifold WASM, 18 watertight parametric primitives, NassScript JS console, STL/OBJ/3MF/GLB/PLY export, 200-level undo.
650 KB. Free. CC BY-NC 4.0.
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Maker
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"Hi Product Hunt! 👋
I’m Nasser, the creator of NASSCAD.
As a maker and electronics technician, I often found traditional CAD software either too heavy, too expensive, or too complex for quick, precise 3D printing tasks. I wanted something that lives in the browser but feels like a professional desktop tool.
Why NASSCAD?
Most web-based tools struggle with complex boolean operations or "non-manifold" meshes that ruin 3D prints. I built NASSCAD around a powerful Manifold WASM engine to ensure that every design is "watertight" and ready for your slicer (Bambu, Prusa, etc.) the moment you export it.