Dietrich's - CAD Freeware
www.dietrichs.com › en › serviceThe free 2D-CAD software for education and training. Dietrich's PlanCAD-L is based on the same program core as the full version and is developed continually as well this way. Therefore, you can use all functions of the PlanCAD-Pro version free of charge. We have decided to offer PlanCAD-L to you as a free download to enable you as pupils ...
LibreCAD - Free Open Source 2D CAD
librecad.orgBRL-CAD. BRL-CAD is a powerful open source cross-platform solid modelling 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, and more than 30 years of active development.