QCAD 3.1 adds various improvements and new features to QCAD but probably the most important news today is that starting with QCAD version 3.1, QCAD is now available under the GPLv3 (open source software) as a free download to anyone.
QCAD 3.1 is an easy to use, complete 2D CAD system for Windows, Mac OS X and Linux. It offers a complete set of general purpose CAD tools and uses the DXF format as its native file format. Additional power-user tools including DWG support and enhanced DXF support are available as QCAD Professional through proprietary add-ons. QCAD Professional can be purchased for a small license fee. All proceeds are reinvested into the future development of QCAD.