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CollabCAD a distributed 2D&3D CAD/CAM and CAE software system being developed by the Computer Aided Design Group of National Informatics Centre, the IT Support professionals from India JCad JCad is a smart 2D CAD program of Pure Java,it'sOS independent and full-featured with an easy-to-use user interface. NttCAD NttCAD is a 2D-3D CAD program written in Java.