# Nasscad

> Free, open-source 3D CAD software for browsers and Windows.

- Website: https://www.nasscad.com
- Category: Other
- Launched on RankRoot: 2026-10-28
- Visitors sent by RankRoot: 1
- Show HN discussion: https://news.ycombinator.com/item?id=50273201

## About

Nasscad is a free, open-source 3D CAD application that runs in the browser and on Windows. It allows users to model mechanical parts, inspect STEP and IFC assemblies, and prepare designs for 3D printing and fabrication locally without an account. The application features local model processing, NassScript for programmatic design using JavaScript, and multiple import and export formats.

## Who it's for

Makers, engineers, and designers looking for a free, offline-capable 3D CAD tool.

## Use cases

- Model mechanical parts using parametric primitives and boolean operations
- Prepare designs for 3D printing by exporting STL or 3MF files
- Inspect and browse complex STEP and IFC assemblies and building models
- Use JavaScript via NassScript to create parts and animate mechanisms

## Features

- Local model processing with no account required
- Runs in compatible web browsers or as a Windows desktop application
- Supports importing and exporting formats including STL, OBJ, 3MF, GLB, PLY, STEP, and IFC
- NassScript engine for procedural modeling and animations using JavaScript
- Interactive tutorials and built-in project saving and loading

## FAQ

### What is NASSCAD?

NASSCAD is a 3D CAD application developed by Nasser / NassLab in France. Create mechanical parts with parametric primitives and boolean operations, inspect STEP and IFC models, and export files for fabrication. It runs in a compatible browser or as a Windows x64 desktop application.

### Should I choose the browser or Windows edition?

Choose the browser edition to start without installation or an account. Choose Windows Setup for an installed desktop application, or Portable to run without an installer. Both Windows editions include MEDUSA and runtime dependencies, and work offline.

### Which file formats can NASSCAD import and export?

NASSCAD imports STL, OBJ, 3MF, GLB, PLY, STEP and IFC. Export options include STL, OBJ, 3MF, GLB, PLY, STEP, IFC4, SVG, and DXF.

### Are my CAD models processed locally?

CAD model processing runs in your browser or in MEDUSA on your own computer. NASSCAD does not require uploading models to a cloud geometry-processing service.

### Is NASSCAD free, and can schools or businesses use it?

NASSCAD is free for personal and commercial use under the AGPLv3 license.

### Can an AI assistant help me model with NassScript?

You can use JavaScript to create parts and animate mechanisms, and you can ask an AI assistant to help draft a script before you review and run it locally.


Source: https://getrankroot.com/launches/nasscad. Product facts come from the maker or the product's own website.