3 Open Source Alternatives to AutoCAD

FreeCAD offers a robust environment for creating and editing detailed 3D models with a strong focus on parametric design. Users can generate complex geometry from constrained 2D sketches and take advantage of modular workbenches tailored to tasks like FEA, CFD, BIM, and CAM/CNC. Its ability to integrate with various file formats ensures smooth incorporation into diverse workflows across mechanical engineering, architecture, and product design.

Solvespace enables users to create intricate 2D sketches and generate complex 3D models using advanced parametric constraints. The tool offers an array of learning materials, including examples, tutorials, and reference guides, to facilitate a smooth design process. With integrated constraint solving, a comprehensive library, and an active forum, Solvespace supports creative engineering and design workflows.

OpenSCAD compiles design scripts into precise 3D models using constructive solid geometry (CSG) and 2D extrusion techniques. It offers complete control over the modeling process with configurable parameters, supports Linux/UNIX, Windows, and Mac OS X, and handles various file formats such as DXF, STL, and OFF. The tool also connects users to a vibrant community through discussion platforms and design sharing sites.