Open-source alternatives to AutoCAD

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

↔ alternative to SolidWorks、Autodesk Fusion 360、AutoCAD

Open source 2D CAD drawing program — LibreCAD is a cross-platform 2D CAD program. It can read DXF/DWG, and write DXF/DWG/PDF/SVG files. It supports point/line/circle/ellipse/parabola/hyperbola/spline primitives. The GUI is highly customizable, and has dozens of translations.

↔ alternative to AutoCAD

Open source 2D CAD design tool — 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).

↔ alternative to AutoCAD

CAD program that runs in the browser — A CAD program that runs in the browser

↔ alternative to AutoCAD、Fusion 360、Onshape