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.
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MeshCAMGRZ Software LLC
GRZ.MeshCAMv9.56
MeshCAM is the fastest way to generate G-code
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F3DF3D-app
f3d-app.f3dv3.5.0
F3D is a fast and minimalist 3D viewer desktop application