LibreCAD is a cross-platform 2D CAD program written in C++17. It can read DXF/DWG files and can write DXF/PDF/SVG files. It supports point/line/circle/ellipse/parabola/spline primitives. The user interface is highly customizable, and has dozens of translations.
Why do you think that https://github.com/cryinkfly/DesignSpark-Mechanical---Linux- is a good alternative to LibreCAD