[ Thanks to kiterunner for this link.
]
“QCad is a CAD software package for 2D design and drafting. QCad
professional edition is the non-free version with options for
limited-time free trial. There is also a community edition of QCad
which is licensed under GPL. You can download QCad community
edition for free.“FreeCAD is a free and Open Source 3D CAD/CAE program, based on
OpenCascade, QT and Python. It features key concepts like macro
recording, workbenches, ability to run as server and dynamically
loadable application extensions. Windows, Mac and Linux versions
available.”