GstarCAD
7.3#3 in 2d cad softwareFrom $239 a yearAndroidiOSWebAPI
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GstarCAD suits people looking for 2D or 3D CAD with DWG and DXF support. Its developer environment may also suit users who work with the listed programming languages and APIs.
OpenPlan3D suits people planning rooms, remodeling, interiors, rentals, or real estate layouts. It can also fit CAD workflows that use DXF exports.