SolveSpace

Free, open-source parametric 2D/3D CAD tool for mechanical design and constraint-based sketching.

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SolveSpace is a free, open-source parametric 2D/3D CAD tool for mechanical design, built around constraint-based sketching that drives solid models. It's cross-platform, available on Windows, macOS, and Linux through official installers, Flathub, and the Snap Store. It's aimed at mechanical designers and hobbyists who want a lightweight, no-cost alternative to full commercial parametric CAD suites.

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