Cad Python Packages

cadquery

A python parametric CAD scripting framework based on OCCT

geomdl

Object-oriented pure Python B-Spline and NURBS library

build123d

A python CAD programming library

gdstk

Gdstk (GDSII Tool Kit) is a C++/Python library for creation and manipulation of GDSII and OASIS files.

ansys-geometry-core

A Python wrapper for Ansys Geometry Services

atopile

Design circuit boards with code! ✨ Get software-like design reuse 🚀, validation, version control and collaboration in hardware; starting with electronics ⚡️

gdspy

Python module for creating GDSII stream files, usually CAD layouts.

openconstructionerp

Open-source construction estimation platform — BOQ, 4D/5D, AI, CAD/BIM takeoff. 55,000+ cost items, 21 languages, 20 standards

pymadcad

Simple yet powerful CAD (Computer Aided Design) library, written with Python.

pyg4ometry

Python code for rapid creation and conversion of radiation transport Monte Carlo (Geant4 and Fluka) geometries

volmdlr

A volume modeler computation-oriented. Include rendering bindings.

onshape-to-robot

Converting Onshape assembly to robot definition (URDF, SDF, MuJoCo) through Onshape API

cad-to-dagmc

Convert CAD geometry (STP files) or Cadquery assemblies to DAGMC h5m files

mat-vis-client

Pure Python client for mat-vis PBR textures — HTTP range reads, zero deps

bdbox

A live development environment for build123d models

build123d-mcp

MCP server for build123d to improve AI cognition when creating 3D CAD models

paramak

Create parametric 3D fusion reactor CAD and neutronics models

pykicad

Library for working with KiCAD file formats

nurbs-python

Object-oriented pure Python B-Spline and NURBS library

pygismo

G+Smo (Geometry + Simulation Modules)

circuit-synth

Better Boards, Faster! Python-defined circuits with Claude Code as your intelligent design partner

cq-editor

CadQuery GUI editor based on PyQT

kicost

Build cost spreadsheet for a KiCad project.

crisscross-kit

Main Repository for #-CAD, a cross-platform design platform for crisscross megastructures.