Pythonocc-core

Judgement

What it is

Building block

What it does

Python bindings for the OpenCascade kernel for 3D modelling, data exchange and visualisation in CAD, PLM, BIM and CAM applications.

Adopt it when

You build CAD or engineering tools in Python and need full OpenCascade access.

Watch out

Mostly maintained by one person, and installation is easiest through conda.

Ready for

Production-ready

Runs as

Library

Built with

Python, C++, SWIG and OpenCascade

How established

Established: started 12 years ago, latest release 8.0.1.2.

What the license allows

You can use it inside a product you sell; changes you make to its own files must be shared.

Judged on 2026-11-03 from the project's README and GitHub data. The license and age lines are worked out directly.

Built from

Follow it down: Pythonocc-core → CPython → GCC → LLVM project → runs on a microchip

How compilers were built, back to punched paper tape

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