OpenSCAD - OpenSCAD is a software for creating solid 3D CAD objects.
OpenJSCAD.org - OpenSCAD + JavaScript = OpenJSCAD, edit locally or remote online, preview in browser direct via...
ImplicitCAD - ImplicitCAD is a programmatic CAD program, implemented in Haskell.
FreeCAD - An open-source parametric 3D modeler
CadQuery - CadQuery is a parametric cad script framework
libfive Studio - A minimalist GUI for solid modeling with the libfive kernel.