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There is also a new competitor written in Lazarus/FPC - ZCAD[1]. Looks barebones for now, but nevertheless interesting.

Looking through the features and issues, it looks like this is a 2D CAD program, like AutoCAD or LibreCAD, instead of a 3D parametric CAD program.

That's unfortunately closely named to zwcad/zw3d, which is a commercial product but extremely excellent.