Opencascade Python Packages

cadquery

A python parametric CAD scripting framework based on OCCT

build123d

A python CAD programming library

pysmesh

Standalone Python wheel for SALOME SMESH and OCCT: CAD sessions, full meshing pipeline, geometry ops. No SALOME/CORBA required.

cqkit

A python library of CadQuery tools and helpers for building 3D CAD models.

simplecadapi

An agent-native CAD SDK for language models to create, inspect, and reconstruct complex, editable 3D models.

wrenchroom

Checks that a real hand tool can reach, turn and remove every fastener in a mechanical assembly. STEP in, verdicts out: terminal, JSON, exit codes for CI.

jupytercad-core

A JupyterLab extension for collaborative 3D geometry modeling

jupytercad-lab

A JupyterLab extension for collaborative 3D geometry modeling

jupytercad-app

A JupyterLab extension for collaborative 3D geometry modeling

cq-editor

CadQuery GUI editor based on PyQT

stepscribe-cad

Turn STEP CAD files into AI-readable context packs: exact dimensions, holes, cutouts, fasteners, assembly relations, joints, weak spots and labelled images. Runs offline. Works with any AI chat, Claude Code (plugin), Copilot and MCP clients.

freecad-typings

Official source code of FreeCAD, a free and opensource multiplatform 3D parametric modeler.

breptile

Convert STL meshes to clean, editable STEP BREP models — analytic surface reconstruction, not tessellated dumps

caddiff

git diff for CAD assemblies — two STEP files in, a picture of what changed plus a machine-readable change list out.

kerf-sdk

Free, MIT-licensed CAD for every discipline — parametric modelling, drawings, FEM, CAM, PCB and BIM, chat-driven and offline-first. No accounts, no cloud, no billing. Part of Vulos.

gml2step

CityGML parsing and STEP conversion toolkit extracted from Paper-CAD

cadquery-ocp-arm

OCP wheel with shared library dependencies bundled.

cadquery-ocp-arm-test

OCP wheel with shared library dependencies bundled.

pythonocc-core

Python package for 3D geometry CAD/BIM/CAM