LICENSE.txt

The QCAD 3 source code is open source and distributed under GPL version 3
with optional exceptions.

See files:
- gpl-3.0.txt
- gpl-3.0-exceptions.txt (if available)

Hershey fonts are released under the terms described in fonts/hershey.readme.
Other CXF fonts in directory 'fonts' are released as public domain (all copyright
is waived). 

Fonts in directory fonts/qt are released under their respective licenses.
See fonts/qt/LICENSES.txt.

Icons and documentation are distributed under the terms of the 
'Creative Commons Attribution 3.0 Unported' license.
See cc-by-3.0.txt

3rd party libraries and plug-ins in src/3rdparty are distributed under 
their respective licenses:

dxflib:             GPL version 2.0 or greater.
                    See src/3rdparty/dxflib/gpl-2.0greater.txt
                    Commercial licenses of dxflib for proprietary use are also available.
opennurbs:          Public domain (neither copyright nor copyleft apply).
                    See src/3rdparty/opennurbs/readme.txt
quazip:             LPGL version 2.1 or greater.
                    See src/3rdparty/quazip/lgpl-2.1.txt
spatialindexnavel:  MIT
                    See src/3rdparty/spatialindexnavel/COPYING
stemmer:            BSD 2-Clause License
                    See src/3rdparty/stemmer/bsd-2.txt