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LibreCAD and the GPLv2

LibreCAD is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License version 2 (GPLv2)
as published by the Free Software Foundation.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.

The GPLv2 can be found in the licenses folder as gpl-2.0.txt.

History

QCAD community edition version 2.0.5.0 was released under the GPLv2.

Copyright (C) 2001-2003 RibbonSoft. All rights reserved.

LibreCAD is a fork of QCAD community edition version 2.0.5.0;
therefore, any modifications of or additions to the program
are also released under the GPLv2.

The project's first commit on Github was Aug 16, 2010.

Rights holders of the code

Some of the following may be composites of multiple copyright notices.

Copyright (C):

  • 1999, 2001, 2007 Frank Warmerdam
  • 2001-2003 RibbonSoft. All rights reserved.
  • 2004-2014 Ingo Berg
  • 2010, 2011, 2012, 2015 R. van Twisk (librecad@rvt.dds.nl)
  • 2011-2015 Dongxu Li (dongxuli2011@gmail.com)
  • 2011-2015 José F. Soriano (rallazz@gmail.com)
  • 2014 cgrzemba (cgrzemba@opencsw.org)
  • 2014 Pavel Krejcir (pavel@pamsoft.cz)
  • 2014-2015 Christian Luginbühl (dinkel@pimprecords.com)
  • 2015 A. Stebich (librecad@mail.lordofbikes.de)
  • 2015-2016 ravas (github.com/r-a-v-a-s)

Rights holders of the fonts

Copyright (C):

  • 2002 Yoshimune Kobayashi (cfg47520@syd.odn.ne.jp)
  • 2004 by Saka.N (Saka.N.06@b3.mnx.ne.jp)
  • 2010-2013 Khaled Hosny (khaledhosny@eglug.org)
  • 2011, 2012 Rallaz (rallazz@gmail.com)
  • 2014 stranger573 (stranger573@mail.ru)
  • 2015 AZO (typesylph@gmail.com)

Rights holders of the art

Copyright (C):

  • 2011 Diego Alejandro Torres M. "Daltom Designer" (http://daltom.2082studio.com)
  • 2011 Pablo Ramrez Alem (www.librecad.com.ar)

Honorable mention

These are known contributors whose copyright notice could not be found.

A list of contributors to the LibreCAD repository can be found at:
https://github.com/LibreCAD/LibreCAD/graphs/contributors

Licenses of bundled content

The LibreCAD source code is released as a whole under the GPLv2.
The following refers to the licenses used by these resources,
when they were released independently from LibreCAD.

The SVG icons in librecad/res/icons were all released under the CC0 license.

libdxfrw was released under GPLv2 "or any later version".

muParser was released under the MIT license.

Shapelib was released under a "MIT Style" license or LGPLv2.

The AZOmix fonts were released under the KST32B version 2.0 license.

The Amiri font was released under the Open Font License.

The WenQuanYi fonts (wqy-unicode.lff) were released under Apache 2.0 or GPLv3.

The Hershey Fonts were originally created by Dr. A. V. Hershey
while working at the U. S. National Bureau of Standards.
The format of the Font data in this distribution was originally created by:

James Hurt
Cognition, Inc.
900 Technology Park Drive
Billerica, MA 01821

Source: readme.md, updated 2016-10-13

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