qcad: qcad (Open Source CAD) qcad: qcad: QCAD is a free, open source application for computer aided drafting qcad: (CAD) in two dimensions (2D). With QCAD you can create technical qcad: drawings such as plans for buildings, interiors, mechanical parts or qcad: schematics and diagrams. QCAD works on Windows, Mac OS X and Linux. qcad: qcad: Homepage: https://www.qcad.org/en/ qcad: qcad: qcad: