LibreCAD - An open source 2D CAD application for Windows, Apple and Linux.
FreeCAD - An open-source parametric 3D modeler
QCAD - QCAD is an application for computer aided drafting in 2D.
Solid Edge - Solid Edge is an industry-leading mechanical design system with exceptional tools for creating and...
OpenSCAD - OpenSCAD is a software for creating solid 3D CAD objects.
nanoCAD - nanoCAD is a pro-grade 2D CAD system with native DWG support and full customizability.