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

OpenSCAD - The Programmers Solid 3D CAD Modeller

LibreCAD is a cross-platform 2D CAD program written in C++17. It can read DXF/DWG files and can write DXF/PDF/SVG files. It supports point/line/circle/ellipse/parabola/spline primitives. The user interface is highly customizable, and has dozens of translations.

This is an active mirror of the KiCad development branch, which is hosted at GitLab (updated every time something is pushed). Pull requests on GitHub are not accepted or watched.

Parametric 2d/3d CAD

Open CASCADE Technology (OCCT) is an open-source software development platform for 3D CAD, CAM, CAE.

QCAD - The Open Source 2D CAD. QCAD is a cross-platform CAD solution for Windows, macOS and Linux. It supports the DXF format and optionally the DWG format (through a proprietary plugin).

Verilog to Routing -- Open Source CAD Flow for FPGA Research

A powerful, innovative and intuitive EDA suite for everyone!

3D CAD viewer and converter based on Qt + OpenCascade

OpenCASCADE Community Edition (OCE): a community driven fork of the Open CASCADE library.

A CAD application for creating virtual LEGO models

Infrastructure for solid modeling

CAD from a parallel universe

LibreCAD 3 is a next generation 2D CAD application written to be modular, with a core independent from GUI toolkits. Scripting is possible with Lua.

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

G+Smo (pronounced gismo or gizmo) is a C++ library for isogeometric analysis (IGA). Geometry plus simulation modules aims at the seamless integration of Computer-aided Design (CAD) and Finite Element Analysis (FEA).

2D polyline library for offsetting, combining, etc.

OpenSource library under X/MIT license to work with CAD files (DWG/DXF). Please use repository linked below, this one is abandoned.

[CVPR'19] Dataset and code used in the research project Scan2CAD: Learning CAD Model Alignment in RGB-D Scans