FreeCAD

FreeCAD is an open-source parametric 3D modeler for designing real-life objects of any size. Parametric modeling lets you change a design by editing parameters in its model history.

You can sketch geometry-constrained 2D shapes and use them as the base for 3D objects, then create production drawings from the models. It is meant for product design, mechanical engineering and architecture, and suits hobbyists, programmers, experienced CAD users, students and teachers. It runs on Windows, macOS and Linux.

Highlights

• Parametric modeling with an editable model history
• Constraint-based 2D sketches as a base for 3D objects
• Tools to adjust dimensions and create production drawings
• Built on the OpenCASCADE geometry kernel
• Broad Python API
• Graphical interface built with Qt