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build123d vs CadQuery

The same facts for both, read from GitHub every night, and the relation a person reviewed.

build123dCadQuery
LanguagePythonPython
LicenceApache-2.0Other
Stars3.5k6k
Latestv0.13.0v2.8.0
Last push2026-10-182026-10-18
Release cadenceabout 47 days between releasesabout 117 days between releases
Active contributors22 commit authors on the default branch in the last 90 days5 commit authors on the default branch in the last 90 days
Flagsnonenone

How they relate

  • build123d replaces CadQuery. Alternatives to CadQuery →

    PartialPython CAD on the same OpenCascade kernel, with a builder syntax instead of a fluent chain.

  • Both replace Fusion. Alternatives to Fusion →

    Partialbuild123dParametric 3D modelling written as Python code, with no GUI and no CAM or simulation.

    PartialCadQueryParametric 3D modelling written as Python code, with no GUI and no CAM or simulation.