qcad (Open Source CAD)

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 dependencies: libqsqlpsql and qt5

To build qt5 version of qcad, run the SlackBuild with QT5=yes:

  # QT5=yes ./qcad.SlackBuild