Download your favorite Computer-Aided Design (CAD)

BRL-CAD

A powerful open source cross-platform solid modeling system that includes interactive geometry editing, high-performance ray-tracing for rendering and geometric analysis, a system performance analysis benchmark suite, geometry libraries for application developers.

FreeCAD

An open-source parametric 3D modeler made primarily to design real-life objects of any size. Parametric modeling allows you to easily modify your design by going back into your model history and changing its parameters.

LeoCAD

LibreCAD

A free Open Source 2D Computer-Aided Design (CAD) application for Windows, Apple and Linux.

OpenSCAD

A free software application for creating solid 3D CAD objects. It is a script-only based modeller that uses its own description language; parts can be previewed, but cannot be interactively selected or modified by mouse in the 3D view.