QCAD is a free, open source application for computer aided drafting (CAD) in two dimensions (2D). With QCAD you can create technical drawings such as plans for buildings, interiors, mechanical parts or schematics and diagrams. QCAD works on Windows, Mac OS X and Linux. Optional dependency: libqsqlpsql and qt5 To build qt5 version of qcad run the slackbuild with QT5=yes. # QT5=yes ./qcad.SlackBuild