Open Source Software Licenses

The information in this document applies to this product

1.  Software Licensed under a modified BSD License
  
  This product includes the following software licensed under a modified
  BSD license.

    angle
    leveldb
    freetype
    libsrtp
    libvorbis
    libvpx 1.4.0
    libwebp
    libyuv
    llvm
    opus
    ots
    pcre
    protobuf
    re2
    skia
    v8 4.5.103.35
    webrtc

  Please see Appendix A below for the terms under which this software
  is distributed.

2.  Software Licensed under the GNU Library General Public License
     
  This product includes software licensed under the GNU Library
  General Public License (LGPL), Version 2.  Please see Appendix B
  below for the terms of this license.
   
  Specifically, the following software included in this product is
  subject to the LGPL:
  
    qt
    blink
   
  All software listed above is copyright by the respective author.
  Please see the source code for detailed information.

3.  Software Licensed under the Independent JPEG Group License
  
  This product includes software licensed under the Independent JPEG Group
  License.  Please see Appendix C below for the terms of this license.
  
  Specifically, the following software included in this product is
  subject to this license:
   
    libjpeg 6b
    libjpeg 8c
   
  All software listed above is copyright by the respective author.
  Please see the source code for detailed information.

4.  Software Licensed under the libpng License
  
  This product includes software licensed under the libpng License.  Please see
  Appendix D below for the terms of this license.
  
  Specifically, the following software included in this product is subject to
  the libpng license:
  
    libpng
  
  All software listed above is copyright by the respective author.
  Please see the source code for detailed information.

5.  Software licensed under the MIT License
  
  This product includes software licensed under the MIT License.  Please see
  Appendix E below for the terms of this license.
  
  Specifically, the following software included in this product is subject to
  the MIT license:
  
    libxml2
    libxslt
    mesa
    qcms
  
  All software listed above is copyright by the respective author.
  Please see the source code for detailed information.

6.  Software licensed under the MPL License

  This product includes software licensed under the MPL License.Please see
  Appendix F below for the terms of this license.

  Specifically, the following software included in this product is subject to
  the MPL license:

    effective_tld_names

  All software listed above is copyright by the respective author.
  Please see the source code for detailed information.

7.  Software Licensed from The OpenSSL Project
  
  This product includes the following software copyright by The OpenSSL
  Project:
 
    openssl
    openssl 0.9.8k

  Please see Appendix G below for the terms under which this software is
  distributed.

8.  Software licensed under the Public Domain License
  
  This product includes software licensed under the Public Domain License.  Please see
  Appendix H below for the terms of this license.
  
  Specifically, the following software included in this product is subject to
  the Public Domain license:
  
    sqlite3
  
  All software listed above is copyright by the respective author.
  Please see the source code for detailed information.

9.  Software licensed under the Apache License
  
  This product includes software licensed under the Apache License.  Please see
  Appendix I below for the terms of this license.
  
  Specifically, the following software included in this product is subject to
  the Apache license:
  
    brotli
  
  All software listed above is copyright by the respective author.
  Please see the source code for detailed information.

10.  Software Licensed under the ZLib License
     
  This product includes software licensed under the ZLib License.  
  Please see Appendix J below for the terms of this license.
   
  Specifically, the following software included in this product is
  subject to the ZLib License:
   
    zlib
    zlib 1.2.8
    zlib 1.2.5
   
  All software listed above is copyright by the respective author.
  Please see the source code for detailed information.

11.  Software licensed under the Unicode License
  
  This product includes software licensed under the Unicode License.  Please see
  Appendix K below for the terms of this license.
  
  Specifically, the following software included in this product is subject to
  the Unicode license:
  
    icu
  
  All software listed above is copyright by the respective author.
  Please see the source code for detailed information.

12.  Disclaimer
  
  All software listed in the above is provided without any liability
  or warranty from their copyright holders.

Appendix A

                      The FreeType Project LICENSE
                      ----------------------------
  
                              2006-Jan-27
  
                      Copyright 1996-2002, 2006 by
            David Turner, Robert Wilhelm, and Werner Lemberg
  
  
  
  Introduction
  ============
  
    The FreeType  Project is distributed in  several archive packages;
    some of them may contain, in addition to the FreeType font engine,
    various tools and  contributions which rely on, or  relate to, the
    FreeType Project.
  
    This  license applies  to all  files found  in such  packages, and
    which do not  fall under their own explicit  license.  The license
    affects  thus  the  FreeType   font  engine,  the  test  programs,
    documentation and makefiles, at the very least.
  
    This  license   was  inspired  by  the  BSD,   Artistic,  and  IJG
    (Independent JPEG  Group) licenses, which  all encourage inclusion
    and  use of  free  software in  commercial  and freeware  products
    alike.  As a consequence, its main points are that:
  
      o We don't promise that this software works. However, we will be
        interested in any kind of bug reports. (`as is' distribution)
  
      o You can  use this software for whatever you  want, in parts or
        full form, without having to pay us. (`royalty-free' usage)
  
      o You may not pretend that  you wrote this software.  If you use
        it, or  only parts of it,  in a program,  you must acknowledge
        somewhere  in  your  documentation  that  you  have  used  the
        FreeType code. (`credits')
  
    We  specifically  permit  and  encourage  the  inclusion  of  this
    software, with  or without modifications,  in commercial products.
    We  disclaim  all warranties  covering  The  FreeType Project  and
    assume no liability related to The FreeType Project.
  
  
    Finally,  many  people  asked  us  for  a  preferred  form  for  a
    credit/disclaimer to use in compliance with this license.  We thus
    encourage you to use the following text:
  
     """  
      Portions of this software are copyright © <year> The FreeType
      Project (www.freetype.org).  All rights reserved.
     """
  
    Please replace <year> with the value from the FreeType version you
    actually use.
  
  
  Legal Terms
  ===========
  
  0. Definitions
  --------------
  
    Throughout this license,  the terms `package', `FreeType Project',
    and  `FreeType  archive' refer  to  the  set  of files  originally
    distributed  by the  authors  (David Turner,  Robert Wilhelm,  and
    Werner Lemberg) as the `FreeType Project', be they named as alpha,
    beta or final release.
  
    `You' refers to  the licensee, or person using  the project, where
    `using' is a generic term including compiling the project's source
    code as  well as linking it  to form a  `program' or `executable'.
    This  program is  referred to  as  `a program  using the  FreeType
    engine'.
  
    This  license applies  to all  files distributed  in  the original
    FreeType  Project,   including  all  source   code,  binaries  and
    documentation,  unless  otherwise  stated   in  the  file  in  its
    original, unmodified form as  distributed in the original archive.
    If you are  unsure whether or not a particular  file is covered by
    this license, you must contact us to verify this.
  
    The FreeType  Project is copyright (C) 1996-2000  by David Turner,
    Robert Wilhelm, and Werner Lemberg.  All rights reserved except as
    specified below.
  
  1. No Warranty
  --------------
  
    THE FREETYPE PROJECT  IS PROVIDED `AS IS' WITHOUT  WARRANTY OF ANY
    KIND, EITHER  EXPRESS OR IMPLIED,  INCLUDING, BUT NOT  LIMITED TO,
    WARRANTIES  OF  MERCHANTABILITY   AND  FITNESS  FOR  A  PARTICULAR
    PURPOSE.  IN NO EVENT WILL ANY OF THE AUTHORS OR COPYRIGHT HOLDERS
    BE LIABLE  FOR ANY DAMAGES CAUSED  BY THE USE OR  THE INABILITY TO
    USE, OF THE FREETYPE PROJECT.
  
  2. Redistribution
  -----------------
  
    This  license  grants  a  worldwide, royalty-free,  perpetual  and
    irrevocable right  and license to use,  execute, perform, compile,
    display,  copy,   create  derivative  works   of,  distribute  and
    sublicense the  FreeType Project (in  both source and  object code
    forms)  and  derivative works  thereof  for  any  purpose; and  to
    authorize others  to exercise  some or all  of the  rights granted
    herein, subject to the following conditions:
  
      o Redistribution of  source code  must retain this  license file
        (`FTL.TXT') unaltered; any  additions, deletions or changes to
        the original  files must be clearly  indicated in accompanying
        documentation.   The  copyright   notices  of  the  unaltered,
        original  files must  be  preserved in  all  copies of  source
        files.
  
      o Redistribution in binary form must provide a  disclaimer  that
        states  that  the software is based in part of the work of the
        FreeType Team,  in  the  distribution  documentation.  We also
        encourage you to put an URL to the FreeType web page  in  your
        documentation, though this isn't mandatory.
  
    These conditions  apply to any  software derived from or  based on
    the FreeType Project,  not just the unmodified files.   If you use
    our work, you  must acknowledge us.  However, no  fee need be paid
    to us.
  
  3. Advertising
  --------------
  
    Neither the  FreeType authors and  contributors nor you  shall use
    the name of the  other for commercial, advertising, or promotional
    purposes without specific prior written permission.
  
    We suggest,  but do not require, that  you use one or  more of the
    following phrases to refer  to this software in your documentation
    or advertising  materials: `FreeType Project',  `FreeType Engine',
    `FreeType library', or `FreeType Distribution'.
  
    As  you have  not signed  this license,  you are  not  required to
    accept  it.   However,  as  the FreeType  Project  is  copyrighted
    material, only  this license, or  another one contracted  with the
    authors, grants you  the right to use, distribute,  and modify it.
    Therefore,  by  using,  distributing,  or modifying  the  FreeType
    Project, you indicate that you understand and accept all the terms
    of this license.
  
  4. Contacts
  -----------
  
    There are two mailing lists related to FreeType:
  
      o freetype@nongnu.org
  
        Discusses general use and applications of FreeType, as well as
        future and  wanted additions to the  library and distribution.
        If  you are looking  for support,  start in  this list  if you
        haven't found anything to help you in the documentation.
  
      o freetype-devel@nongnu.org
  
        Discusses bugs,  as well  as engine internals,  design issues,
        specific licenses, porting, etc.
  
    Our home page can be found at
  
      http://www.freetype.org

Appendix B

  		  GNU LIBRARY GENERAL PUBLIC LICENSE
  		       Version 2, June 1991
  
   Copyright (C) 1991 Free Software Foundation, Inc.
                      675 Mass Ave, Cambridge, MA 02139, USA
   Everyone is permitted to copy and distribute verbatim copies
   of this license document, but changing it is not allowed.
  
  [This is the first released version of the library GPL.  It is
   numbered 2 because it goes with version 2 of the ordinary GPL.]
  
  			    Preamble
  
    The licenses for most software are designed to take away your
  freedom to share and change it.  By contrast, the GNU General Public
  Licenses are intended to guarantee your freedom to share and change
  free software--to make sure the software is free for all its users.
  
    This license, the Library General Public License, applies to some
  specially designated Free Software Foundation software, and to any
  other libraries whose authors decide to use it.  You can use it for
  your libraries, too.
  
    When we speak of free software, we are referring to freedom, not
  price.  Our General Public Licenses are designed to make sure that you
  have the freedom to distribute copies of free software (and charge for
  this service if you wish), that you receive source code or can get it
  if you want it, that you can change the software or use pieces of it
  in new free programs; and that you know you can do these things.
  
    To protect your rights, we need to make restrictions that forbid
  anyone to deny you these rights or to ask you to surrender the rights.
  These restrictions translate to certain responsibilities for you if
  you distribute copies of the library, or if you modify it.
  
    For example, if you distribute copies of the library, whether gratis
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    Our method of protecting your rights has two steps: (1) copyright
  the library, and (2) offer you this license which gives you legal
  permission to copy, distribute and/or modify the library.
  
    Also, for each distributor's protection, we want to make certain
  that everyone understands that there is no warranty for this free
  library.  If the library is modified by someone else and passed on, we
  want its recipients to know that what they have is not the original
  version, so that any problems introduced by others will not reflect on
  the original authors' reputations.
  
    Finally, any free program is threatened constantly by software
  patents.  We wish to avoid the danger that companies distributing free
  software will individually obtain patent licenses, thus in effect
  transforming the program into proprietary software.  To prevent this,
  we have made it clear that any patent must be licensed for everyone's
  free use or not licensed at all.
  
    Most GNU software, including some libraries, is covered by the ordinary
  GNU General Public License, which was designed for utility programs.  This
  license, the GNU Library General Public License, applies to certain
  designated libraries.  This license is quite different from the ordinary
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    The reason we have a separate public license for some libraries is that
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    Note that it is possible for a library to be covered by the ordinary
  General Public License rather than by this special one.
  
  		  GNU LIBRARY GENERAL PUBLIC LICENSE
     TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
  
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  and the section as a whole is intended to apply in other circumstances.
  
  It is not the purpose of this section to induce you to infringe any
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  integrity of the free software distribution system which is
  implemented by public license practices.  Many people have made
  generous contributions to the wide range of software distributed
  through that system in reliance on consistent application of that
  system; it is up to the author/donor to decide if he or she is willing
  to distribute software through any other system and a licensee cannot
  impose that choice.
  
  This section is intended to make thoroughly clear what is believed to
  be a consequence of the rest of this License.
  
    12. If the distribution and/or use of the Library is restricted in
  certain countries either by patents or by copyrighted interfaces, the
  original copyright holder who places the Library under this License may add
  an explicit geographical distribution limitation excluding those countries,
  so that distribution is permitted only in or among countries not thus
  excluded.  In such case, this License incorporates the limitation as if
  written in the body of this License.
  
    13. The Free Software Foundation may publish revised and/or new
  versions of the Library General Public License from time to time.
  Such new versions will be similar in spirit to the present version,
  but may differ in detail to address new problems or concerns.
  
  Each version is given a distinguishing version number.  If the Library
  specifies a version number of this License which applies to it and
  "any later version", you have the option of following the terms and
  conditions either of that version or of any later version published by
  the Free Software Foundation.  If the Library does not specify a
  license version number, you may choose any version ever published by
  the Free Software Foundation.
  
    14. If you wish to incorporate parts of the Library into other free
  programs whose distribution conditions are incompatible with these,
  write to the author to ask for permission.  For software which is
  copyrighted by the Free Software Foundation, write to the Free
  Software Foundation; we sometimes make exceptions for this.  Our
  decision will be guided by the two goals of preserving the free status
  of all derivatives of our free software and of promoting the sharing
  and reuse of software generally.
  
  			    NO WARRANTY
  
    15. BECAUSE THE LIBRARY IS LICENSED FREE OF CHARGE, THERE IS NO
  WARRANTY FOR THE LIBRARY, TO THE EXTENT PERMITTED BY APPLICABLE LAW.
  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR
  OTHER PARTIES PROVIDE THE LIBRARY "AS IS" WITHOUT WARRANTY OF ANY
  KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE
  LIBRARY IS WITH YOU.  SHOULD THE LIBRARY PROVE DEFECTIVE, YOU ASSUME
  THE COST OF ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
  
    16. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN
  WRITING WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY
  AND/OR REDISTRIBUTE THE LIBRARY AS PERMITTED ABOVE, BE LIABLE TO YOU
  FOR DAMAGES, INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR
  CONSEQUENTIAL DAMAGES ARISING OUT OF THE USE OR INABILITY TO USE THE
  LIBRARY (INCLUDING BUT NOT LIMITED TO LOSS OF DATA OR DATA BEING
  RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD PARTIES OR A
  FAILURE OF THE LIBRARY TO OPERATE WITH ANY OTHER SOFTWARE), EVEN IF
  SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
  DAMAGES.
  
  		     END OF TERMS AND CONDITIONS
  
       Appendix: How to Apply These Terms to Your New Libraries
  
    If you develop a new library, and you want it to be of the greatest
  possible use to the public, we recommend making it free software that
  everyone can redistribute and change.  You can do so by permitting
  redistribution under these terms (or, alternatively, under the terms of the
  ordinary General Public License).
  
    To apply these terms, attach the following notices to the library.  It is
  safest to attach them to the start of each source file to most effectively
  convey the exclusion of warranty; and each file should have at least the
  "copyright" line and a pointer to where the full notice is found.
  
      <one line to give the library's name and a brief idea of what it does.>
      Copyright (C) <year>  <name of author>
  
      This library is free software; you can redistribute it and/or
      modify it under the terms of the GNU Library General Public
      License as published by the Free Software Foundation; either
      version 2 of the License, or (at your option) any later version.
  
      This library 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
      Library General Public License for more details.
  
      You should have received a copy of the GNU Library General Public
      License along with this library; if not, write to the Free
      Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  
  Also add information on how to contact you by electronic and paper mail.
  
  You should also get your employer (if you work as a programmer) or your
  school, if any, to sign a "copyright disclaimer" for the library, if
  necessary.  Here is a sample; alter the names:
  
    Yoyodyne, Inc., hereby disclaims all copyright interest in the
    library `Frob' (a library for tweaking knobs) written by James Random Hacker.
  
    <signature of Ty Coon>, 1 April 1990
    Ty Coon, President of Vice
  
  That's all there is to it!

Appendix C

  Independent JPEG Group License
  LEGAL ISSUES

  In plain English:

    1. We don't promise that this software works. (But if you find any bugs, please 
  let us know!) 
    2. You can use this software for whatever you want. You don't have to pay us. 
    3. You may not pretend that you wrote this software. If you use it in a program, 
  you must acknowledge somewhere in your documentation that you've used the IJG code.

    In legalese:

    The authors make NO WARRANTY or representation, either express or implied, with 
  respect to this software, its quality, accuracy, merchantability, or fitness for 
  a particular purpose. This software is provided "AS IS", and you, its user, assume
  the entire risk as to its quality and accuracy.

    This software is copyright (C) 1991-1998, Thomas G. Lane. All Rights Reserved 
  except as specified below.

  Permission is hereby granted to use, copy, modify, and distribute this software 
  (or portions thereof) for any purpose, without fee, subject to these conditions:

    (1) If any part of the source code for this software is distributed, then this 
  README file must be included, with this copyright and no-warranty notice unaltered;
  and any additions, deletions, or changes to the original files must be clearly
  indicated in accompanying documentation. 
    (2) If only executable code is distributed, then the accompanying documentation
  must state that "this software is based in part on the work of the Independent JPEG
  Group". 
    (3) Permission for use of this software is granted only if the user accepts full
  responsibility for any undesirable consequences; the authors accept NO LIABILITY
  for damages of any kind.

    These conditions apply to any software derived from or based on the IJG code,
  not just to the unmodified library. If you use our work, you ought to acknowledge us.

    Permission is NOT granted for the use of any IJG author's name or company name
  in advertising or publicity relating to this software or products derived from it.
  This software may be referred to only as "the Independent JPEG Group's software".

    We specifically permit and encourage the use of this software as the basis of
  commercial products, provided that all warranty or liability claims are assumed
  by the product vendor.

    ansi2knr.c is included in this distribution by permission of L. Peter Deutsch,
  sole proprietor of its copyright holder, Aladdin Enterprises of Menlo Park, CA.
  ansi2knr.c is NOT covered by the above copyright and conditions, but instead by
  the usual distribution terms of the Free Software Foundation; principally, that
  you must include source code if you redistribute it. (See the file ansi2knr.c for
  full details.) However, since ansi2knr.c is not needed as part of any program
  generated from the IJG code, this does not limit you more than the foregoing
  paragraphs do.

    The Unix configuration script "configure" was produced with GNU Autoconf.
  It is copyright by the Free Software Foundation but is freely distributable.
  The same holds for its supporting scripts (config.guess, config.sub, ltconfig,
  ltmain.sh). Another support script, install-sh, is copyright by M.I.T. but is
  also freely distributable.

    It appears that the arithmetic coding option of the JPEG spec is covered by
  patents owned by IBM, AT&T, and Mitsubishi. Hence arithmetic coding cannot
  legally be used without obtaining one or more licenses. For this reason, support
  for arithmetic coding has been removed from the free JPEG software. (Since
  arithmetic coding provides only a marginal gain over the unpatented Huffman
  mode, it is unlikely that very many implementations will support it.) So far
  as we are aware, there are no patent restrictions on the remaining code.

    The IJG distribution formerly included code to read and write GIF files. To
  avoid entanglement with the Unisys LZW patent, GIF reading support has been
  removed altogether, and the GIF writer has been simplified to produce
  "uncompressed GIFs". This technique does not use the LZW algorithm; the
  resulting GIF files are larger than usual, but are readable by all standard
  GIF decoders.

    We are required to state that "The Graphics Interchange Format(c) is the
  Copyright property of CompuServe Incorporated. GIF(sm) is a Service Mark
  property of CompuServe Incorporated."

Appendix D

                              libpng-LICENSE
                              --------------

  This copy of the libpng notices is provided for your convenience.  In case of
  any discrepancy between this copy and the notices in the file png.h that is
  included in the libpng distribution, the latter shall prevail.
  
  COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
  
  If you modify libpng you may insert additional notices immediately following
  this sentence.
  
  This code is released under the libpng license.
  
  libpng versions 1.0.7, July 1, 2000 through 1.6.26, October 20, 2016 are
  Copyright (c) 2000-2002, 2004, 2006-2016 Glenn Randers-Pehrson, are
  derived from libpng-1.0.6, and are distributed according to the same
  disclaimer and license as libpng-1.0.6 with the following individuals
  added to the list of Contributing Authors:
  
     Simon-Pierre Cadieux
     Eric S. Raymond
     Mans Rullgard
     Cosmin Truta
     Gilles Vollant
     James Yu
  
  and with the following additions to the disclaimer:
  
     There is no warranty against interference with your enjoyment of the
     library or against infringement.  There is no warranty that our
     efforts or the library will fulfill any of your particular purposes
     or needs.  This library is provided with all faults, and the entire
     risk of satisfactory quality, performance, accuracy, and effort is with
     the user.
  
  Some files in the "contrib" directory and some configure-generated
  files that are distributed with libpng have other copyright owners and
  are released under other open source licenses.
  
  libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
  Copyright (c) 1998-2000 Glenn Randers-Pehrson, are derived from
  libpng-0.96, and are distributed according to the same disclaimer and
  license as libpng-0.96, with the following individuals added to the list
  of Contributing Authors:
  
     Tom Lane
     Glenn Randers-Pehrson
     Willem van Schaik
  
  libpng versions 0.89, June 1996, through 0.96, May 1997, are
  Copyright (c) 1996-1997 Andreas Dilger, are derived from libpng-0.88,
  and are distributed according to the same disclaimer and license as
  libpng-0.88, with the following individuals added to the list of
  Contributing Authors:
  
     John Bowler
     Kevin Bracey
     Sam Bushell
     Magnus Holmgren
     Greg Roelofs
     Tom Tanner
  
  Some files in the "scripts" directory have other copyright owners
  but are released under this license.
  
  libpng versions 0.5, May 1995, through 0.88, January 1996, are
  Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.
  
  For the purposes of this copyright and license, "Contributing Authors"
  is defined as the following set of individuals:
  
     Andreas Dilger
     Dave Martindale
     Guy Eric Schalnat
     Paul Schmidt
     Tim Wegner
  
  The PNG Reference Library is supplied "AS IS".  The Contributing Authors
  and Group 42, Inc. disclaim all warranties, expressed or implied,
  including, without limitation, the warranties of merchantability and of
  fitness for any purpose.  The Contributing Authors and Group 42, Inc.
  assume no liability for direct, indirect, incidental, special, exemplary,
  or consequential damages, which may result from the use of the PNG
  Reference Library, even if advised of the possibility of such damage.
  
  Permission is hereby granted to use, copy, modify, and distribute this
  source code, or portions hereof, for any purpose, without fee, subject
  to the following restrictions:
  
    1. The origin of this source code must not be misrepresented.
  
    2. Altered versions must be plainly marked as such and must not
       be misrepresented as being the original source.
  
    3. This Copyright notice may not be removed or altered from any
       source or altered source distribution.
  
  The Contributing Authors and Group 42, Inc. specifically permit, without
  fee, and encourage the use of this source code as a component to
  supporting the PNG file format in commercial products.  If you use this
  source code in a product, acknowledgment is not required but would be
  appreciated.
  
  END OF COPYRIGHT NOTICE, DISCLAIMER, and LICENSE.
  
  TRADEMARK:
  
  The name "libpng" has not been registered by the Copyright owner
  as a trademark in any jurisdiction.  However, because libpng has
  been distributed and maintained world-wide, continually since 1995,
  the Copyright owner claims "common-law trademark protection" in any
  jurisdiction where common-law trademark is recognized.
  
  OSI CERTIFICATION:
  
  Libpng is OSI Certified Open Source Software.  OSI Certified Open Source is
  a certification mark of the Open Source Initiative. OSI has not addressed
  the additional disclaimers inserted at version 1.0.7.
  
  EXPORT CONTROL:
  
  The Copyright owner believes that the Export Control Classification
  Number (ECCN) for libpng is EAR99, which means not subject to export
  controls or International Traffic in Arms Regulations (ITAR) because
  it is open source, publicly available software, that does not contain
  any encryption software.  See the EAR, paragraphs 734.3(b)(3) and
  734.7(b).
  
  Glenn Randers-Pehrson
  glennrp at users.sourceforge.net
  October 20, 2016

Appendix E

  Permission is hereby granted, free of charge, to any person obtaining a copy
  of this software and associated documentation files (the "Software"), to deal
  in the Software without restriction, including without limitation the rights
  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  copies of the Software, and to permit persons to whom the Software is fur-
  nished to do so, subject to the following conditions:
  
  The above copyright notice and this permission notice shall be included in
  all copies or substantial portions of the Software.
  
  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  THE SOFTWARE.

Appendix F

  Mozilla is the custodian of the Mozilla Public License ("MPL"), an open 
  source/free software license.

  The current version of the license is MPL 2.0 (html | plain text). If 
  you want to use or distribute code licensed under the MPL 2.0 and have  
  questions about it, you may want to read the FAQ.

  MPL 2.0 Revision Process
  The release of MPL 2.0 was the result of a two year process that revised
  MPL 1.1. A Revision FAQ documents this process, and explains the most 
  significant changes made.

  Historical Documents
  Various historical documents relating to the Mozilla and Netscape Public
  Licenses are available, including deprecated versions of the license such
  as MPL 1.1.

  Mozilla Licensing Information
  The Mozilla Project is only one of many users of the MPL, but because many
  people come to this page looking for information about Mozilla's open source
  licensing policies and practices, we've provided the information below as 
  a reference.

  Correctly Licensing New Source Code
  Any new code checked into Mozilla's source repositories needs to comply with
  Mozilla's source code licensing policy. Please use the appropriate header
  text at the top of each file.

  Licenses For Existing Source Code
  Most Mozilla software projects use the MPL, but some have different terms. 
  Detailed information on the licensing of existing code can be found by 
  inspecting its license headers, or by visiting the license information 
  page in the relevant Mozilla software.

  For information on how other things are licensed, including Mozilla's
  trademarks and websites, see our general licensing information page.

Appendix G

  Redistribution and use in source and binary forms, with or without
  modification, are permitted provided that the following conditions
  are met:
  
  1. Redistributions of source code must retain the above copyright
     notice, this list of conditions and the following disclaimer. 
  
  2. Redistributions in binary form must reproduce the above copyright
     notice, this list of conditions and the following disclaimer in
     the documentation and/or other materials provided with the
     distribution.
  
  3. All advertising materials mentioning features or use of this
     software must display the following acknowledgment:
     "This product includes software developed by the OpenSSL Project
     for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  
  4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
     endorse or promote products derived from this software without
     prior written permission. For written permission, please contact
     openssl-core@openssl.org.
  
  5. Products derived from this software may not be called "OpenSSL"
     nor may "OpenSSL" appear in their names without prior written
     permission of the OpenSSL Project.
  
  6. Redistributions of any form whatsoever must retain the following
     acknowledgment:
     "This product includes software developed by the OpenSSL Project
     for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  
  THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  OF THE POSSIBILITY OF SUCH DAMAGE.

Appendix H

    SQLite Is Public Domain
    
    All of the code and documentation in SQLite has been dedicated to the 
    public domain by the authors. All code authors, and representatives of 
    the companies they work for, have signed affidavits dedicating their 
    contributions to the public domain and originals of those signed affidavits 
    are stored in a firesafe at the main offices of Hwaci. 
    Anyone is free to copy, modify, publish, use, compile, sell, or distribute 
    the original SQLite code, either in source code form or as a compiled binary,
    for any purpose, commercial or non-commercial, and by any means.

    The previous paragraph applies to the deliverable code and documentation in 
    SQLite - those parts of the SQLite library that you actually bundle and 
    ship with a larger application. Some scripts used as part of the build process
    (for example the "configure" scripts generated by autoconf) might fall 
    under other open-source licenses. Nothing from these build scripts ever reaches 
    the final deliverable SQLite library, however, and so the licenses associated 
    with those scripts should not be a factor in assessing your rights to copy 
    and use the SQLite library.

    All of the deliverable code in SQLite has been written from scratch. 
    No code has been taken from other projects or from the open internet. 
    Every line of code can be traced back to its original author, 
    and all of those authors have public domain dedications on file. 
    So the SQLite code base is clean and is uncontaminated with licensed 
    code from other projects.

Appendix I

                              Apache License
                           Version 2.0, January 2004
                        http://www.apache.org/licenses/

   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION

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      "License" shall mean the terms and conditions for use, reproduction,
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      You may add Your own copyright statement to Your modifications and
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   5. Submission of Contributions. Unless You explicitly state otherwise,
      any Contribution intentionally submitted for inclusion in the Work
      by You to the Licensor shall be under the terms and conditions of
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      the terms of any separate license agreement you may have executed
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   6. Trademarks. This License does not grant permission to use the trade
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   8. Limitation of Liability. In no event and under no legal theory,
      whether in tort (including negligence), contract, or otherwise,
      unless required by applicable law (such as deliberate and grossly
      negligent acts) or agreed to in writing, shall any Contributor be
      liable to You for damages, including any direct, indirect, special,
      incidental, or consequential damages of any character arising as a
      result of this License or out of the use or inability to use the
      Work (including but not limited to damages for loss of goodwill,
      work stoppage, computer failure or malfunction, or any and all
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   9. Accepting Warranty or Additional Liability. While redistributing
      the Work or Derivative Works thereof, You may choose to offer,
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      of any other Contributor, and only if You agree to indemnify,
      defend, and hold each Contributor harmless for any liability
      incurred by, or claims asserted against, such Contributor by reason
      of your accepting any such warranty or additional liability.

   END OF TERMS AND CONDITIONS

   APPENDIX: How to apply the Apache License to your work.

      To apply the Apache License to your work, attach the following
      boilerplate notice, with the fields enclosed by brackets "[]"
      replaced with your own identifying information. (Don't include
      the brackets!)  The text should be enclosed in the appropriate
      comment syntax for the file format. We also recommend that a
      file or class name and description of purpose be included on the
      same "printed page" as the copyright notice for easier
      identification within third-party archives.

   Copyright [yyyy] [name of copyright owner]

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

       http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.

Appendix J
                              zlib License

   This software is provided 'as-is', without any express or implied
   warranty. In no event will the authors be held liable for any
   damages arising from the use of this software.

   Permission is granted to anyone to use this software for any
   purpose, including commercial applications, and to alter it and
   redistribute it freely, subject to the following restrictions:

   1. The origin of this software must not be misrepresented; you must
      not claim that you wrote the original software. If you use this
      software in a product, an acknowledgment in the product documentation
      would be appreciated but is not required.

   2. Altered source versions must be plainly marked as such, and
      must not be misrepresented as being the original software.

   3. This notice may not be removed or altered from any source
      distribution.

Appendix K

    UNICODE, INC. LICENSE AGREEMENT - DATA FILES AND SOFTWARE

    Unicode Data Files include all data files under the directories
    http://www.unicode.org/Public/, http://www.unicode.org/reports/,
    http://www.unicode.org/cldr/data/, http://source.icu-project.org/repos/icu/, and
    ttp://www.unicode.org/utility/trac/browser/.

    Unicode Data Files do not include PDF online code charts under the
    directory http://www.unicode.org/Public/.

    Software includes any source code published in the Unicode Standard
    or under the directories
    http://www.unicode.org/Public/, http://www.unicode.org/reports/,
    http://www.unicode.org/cldr/data/, http://source.icu-project.org/repos/icu/, and
    http://www.unicode.org/utility/trac/browser/.

    NOTICE TO USER: Carefully read the following legal agreement.
    BY DOWNLOADING, INSTALLING, COPYING OR OTHERWISE USING UNICODE INC.'S
    DATA FILES ("DATA FILES"), AND/OR SOFTWARE ("SOFTWARE"),
    YOU UNEQUIVOCALLY ACCEPT, AND AGREE TO BE BOUND BY, ALL OF THE
    TERMS AND CONDITIONS OF THIS AGREEMENT.
    IF YOU DO NOT AGREE, DO NOT DOWNLOAD, INSTALL, COPY, DISTRIBUTE OR USE
    THE DATA FILES OR SOFTWARE.
 
    COPYRIGHT AND PERMISSION NOTICE

    Copyright © 1991-2017 Unicode, Inc. All rights reserved.
    Distributed under the Terms of Use in http://www.unicode.org/copyright.html.

    Permission is hereby granted, free of charge, to any person obtaining
    a copy of the Unicode data files and any associated documentation
    (the "Data Files") or Unicode software and any associated documentation
    (the "Software") to deal in the Data Files or Software
    without restriction, including without limitation the rights to use,
    copy, modify, merge, publish, distribute, and/or sell copies of
    the Data Files or Software, and to permit persons to whom the Data Files
    or Software are furnished to do so, provided that either
    (a) this copyright and permission notice appear with all copies
    of the Data Files or Software, or
    (b) this copyright and permission notice appear in associated
    Documentation.
    
    Except as contained in this notice, the name of a copyright holder
    shall not be used in advertising or otherwise to promote the sale,
    use or other dealings in these Data Files or Software without prior
    written authorization of the copyright holder.


















      

  

  



    


    