QCad is a powerful but easy to use 2D CAD program for Linux, Windows, and Mac OS X. It uses DXF as its standard file format. While other CAD packages are often rather complicated to use, QCad tries to stay comfortable, and even an absolute beginner can create professional drawings with a minimum of effort.
QCad Professional is an application for computer aided drafting in two dimensions (2D). With QCad, you can create technical drawings such as plans for buildings, interiors, mechanical parts, or schemas and diagrams. QCad reads an writes DXF files and can export to SVG, PDF, and various bitmap formats.