LibreCAD – Free Open Source 2D CAD
LibreCAD/LibreCAD: LibreCAD is a cross-platform 2D CAD program written in C++11 using the Qt framework. It can read DXF and DWG files and can write DXF, PDF and SVG files. The user interface is highly customizable, and has dozens of translations. (github.com)
LibreCAD User Manual — LibreCAD 2.2.0 documentation
start [Wiki] (librecad.org)
Part Libraries and Symbols
(816) Librecad Tutorial – YouTube
LibreCAD https://forum.librecad.org/