Dune 3D for Windows

Dune 3D — lightweight parametric CAD

Dune 3D is a free, open-source parametric 3D CAD program built for both beginners and seasoned modelers. It provides a full set of sketching and constraint tools in two and three dimensions, plus common solid-modifying operations so you can produce detailed parts and assemblies.

Quick overview

• Exports high-quality STEP and STL files for sharing and downstream use.
• Runs on Windows and Linux, relying on a modern codebase for better stability and speed.
• Accepts STEP imports so you can reference existing models during design.
• Parametric modeling workflow suitable for new users as well as professionals.
• Includes support for fillets and chamfers to refine edges and add manufacturable detail.

Modeling tools and workflow

Sketch and constraint capabilities are available in both 2D and 3D workspaces, allowing precise control over geometry and relationships. The parametric approach means changes propagate through the model history, making iterative design straightforward. Tools for adding chamfers and fillets help produce finished, production-ready geometry.

File compatibility and exchange

Dune 3D can import STEP files to use as references or starting points, which is useful when integrating with other CAD data. It also exports high-quality STEP and STL formats so models can be shared, analyzed, or sent to CAM/3D-printing workflows.

Platforms and performance

The application supports Windows and Linux platforms. Its up-to-date codebase focuses on reliability and responsive performance, helping reduce crashes and improve overall user experience.

Alternative to consider

If you want another free, open-source option with a larger community and extensive plugins, consider FreeCAD — a widely used parametric CAD package that complements Dune 3D for more complex or specialized workflows.