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<p class="breadcrumbs"><a href="../welcome/index_en">Home</a> » About NetSurf</p>

<h1>NetSurf <em>2.6 (22 Sep 2010 13:17)</em></h1>

<p>Small as a mouse, fast as a cheetah, and available for free.  NetSurf is a
multi-platform web browser for RISC OS, UNIX-like platforms (including Linux)
and more.</p>

<p>The NetSurf Developers are:</p>
<div id="DevList">
<div>
<h2>Code</h2>
<ul>
<li>Kevin Bagust</li>
<li>John-Mark Bell</li>
<li>Mark Benjamin</li>
<li>Adam Blokus</li>
<li>Pawe&#x0142 Blokus</li>
<li>James Bursa</li>
<li>Stefaan Claes</li>
<li>Calin Dobos</li>
<li>Michael Drake</li>
<li>Sean Fox</li>
<li>Stephen Fryatt</li>
<li>Rik Griffin</li>
<li>Matthew Hambley</li>
<li>Rob Jackson</li>
<li>Rob Kendrick</li>
<li>Jeffrey Lee</li>
<li>Adrian Lees</li>
<li>Michael Lester</li>
<li>Phil Mellor</li>
<li>Philip Pemberton</li>
<li>François Revol</li>
<li>Darren Salt</li>
<li>Vincent Sanders</li>
<li>James Shaw</li>
<li>Andrew Sidwell</li>
<li>Daniel Silverstone</li>
<li>Andrew Timmins</li>
<li>John Tytgat</li>
<li>Chris Williams</li>
<li>Richard Wilson</li>
<li>Bo Yang</li>
<li>Chris Young</li>
</ul>
</div>
<div>
<h2>Documentation</h2>
<ul>
<li>John-Mark Bell</li>
<li>James Bursa</li>
<li>Michael Drake</li>
<li>Rob Kendrick</li>
<li>James Shaw</li>
<li>Richard Wilson</li>
</ul>
</div>
<div>
<h2>Graphics</h2>
<ul>
<li>Michael Drake</li>
<li>Andrew Duffell</li>
<li>John Duffell</li>
<li>Richard Hallas</li>
<li>Phil Mellor</li>
</ul>
</div>
<div>
<h2>Translations</h2>
<ul>
<li>Sebastian Barthel</li>
<li>Bruno D'Arcangeli</li>
<li>Samir Hawamdeh</li>
<li>Gerard van Katwijk</li>
<li>Jérôme Mathevet</li>
<li>Simon Voortman</li>
</ul>
</div>
</div>

<h2>Licence information</h2>

<p>NetSurf, the source code, documentation, translatable messages files and
UI definitions are licensed under the GNU General Public Licence, version 2.0.
In addition, as a special exception, permission is granted to link the code
of this release of NetSurf with the OpenSSL project's "OpenSSL" library (or
with modified versions of it that use the same licence as the "OpenSSL"
library), and distribute the linked executables. You must obey the GNU
General Public License version 2 in all respects for all of the code used
other than "OpenSSL". If you modify the code, you may extend this exception
to your version of the code, but you are not obligated to do so. If you do
not wish to do so, delete this exception statement from your version.</p>

<p>NetSurf's artwork resources are licensed under the MIT licence.</p>

<p>NetSurf may also incorporate the following other components.</p>

<table>
 <tr><th colspan="3">NetSurf Project Components</th></tr>
 <tr><th><a href="http://www.netsurf-browser.org/">NetSurf</a></th>
   <td><a href="#gplv2">GPLv2</a></td>
   <td>© 2002&ndash;2010 The NetSurf Developers</td></tr>

 <tr><th><a href="http://www.netsurf-browser.org/projects/libcss/">LibCSS</a></th>
   <td><a href="#mit">MIT</a></td>
   <td>© 2007&ndash;2010 John-Mark Bell</td></tr>

 <tr><th><a href="http://www.netsurf-browser.org/projects/hubbub/">Hubbub</a></th>
   <td><a href="#mit">MIT</a></td>
   <td>© 2007&ndash;2010 John-Mark Bell<br />© 2008&ndash;2009 Andrew Sidwell</td></tr>

 <tr><th><a href="http://www.netsurf-browser.org/projects/libparserutils/">LibParserUtils</a></th>
   <td><a href="#mit">MIT</a></td>
   <td>© 2007&ndash;2009 John-Mark Bell</td></tr>

 <tr><th><a href="http://www.netsurf-browser.org/projects/librosprite/">LibROSprite</a></th>
   <td><a href="#mit">MIT</a></td>
   <td>© 2008 James Shaw</td></tr>

 <tr><th><a href="http://www.netsurf-browser.org/projects/libpencil">Libpencil</a></th>
   <td><a href="#mit">MIT</a></td>
   <td>© 2005&ndash;2006 James Bursa</td></tr>

 <tr><th><a href="http://www.netsurf-browser.org/projects/rufl">RUfl</a></th>
   <td><a href="#mit">MIT</a></td>
   <td>© 2005&ndash;2009 James Bursa</td></tr>

 <tr><th><a href="http://www.netsurf-browser.org/projects/libsvgtiny">Libsvgtiny</a></th>
   <td><a href="#mit">MIT</a></td>
   <td>© 2008&ndash;2009 James Bursa</td></tr>

 <tr><th><a href="http://source.netsurf-browser.org/trunk/libnsbmp/">Libnsbmp</a></th>
   <td><a href="#mit">MIT</a></td>
   <td>© 2006 Richard Wilson<br />© 2008 Sean Fox</td></tr>

 <tr><th><a href="http://source.netsurf-browser.org/trunk/libnsfb/">Libnsfb</a></th>
   <td><a href="#mit">MIT</a></td>
   <td>© 2009&ndash;2010 Vincent Sanders</td></tr>

 <tr><th><a href="http://source.netsurf-browser.org/trunk/libnsgif/">Libnsgif</a></th>
   <td><a href="#mit">MIT</a></td>
   <td>© 2004 Richard Wilson</br>© 2008 Sean Fox</td></tr>

 <tr><th><a href="http://www.netsurf-browser.org/projects/libwapcaplet">LibWapcaplet</a></th>
   <td><a href="#mit">MIT</a></td>
   <td>© 2009&ndash;2010 NetSurf Browser Project, Daniel Silverstone</td></tr>

 <tr><th colspan="3">Third Party Components</th></tr>

 <tr><th><a href="http://curl.haxx.se/">cURL</a></th>
   <td><a href="#mit">MIT</a></td>
   <td>© 1996&ndash;2010 Daniel Stenberg</td></tr>

 <tr><th><a href="http://libharu.org/">Haru PDF</a></th>
   <td><a href="#zlib">ZLib</a></td>
   <td>© 2000&ndash;2008 Takeshi Kanno</td></tr>

 <tr><th><a href="http://www.ijg.org">libjpeg</a></th>
   <td><a href="#ijg">IJG</a></td>
   <td>© 1991&ndash;2010 Thomas G. Lane, Guido Vollbeding</td></tr>

 <tr><th><a href="http://www.littlecms.com/">liblcms</a></th>
   <td><a href="#mit">MIT</a></td>
   <td>© 1998&ndash;2007 Marti Maria Saguer</td></tr>

 <tr><th><a href="http://www.libmng.com">libmng</a></th>
   <td><a href="#mng">MNG</a></td>
   <td>© 2000&ndash;2007 Gerard Juyn, Glenn Randers-Pehrson</td></tr>

 <tr><th><a href="http://ro-oslib.sourceforge.net/">OSLib</a></th>
   <td><a href="#oslib">OSLib</a></td>
   <td>© 1994&ndash;1998 Jonathan Coxhead and contributors</td></tr>

 <tr><th><a href="http://www.openssl.org/">OpenSSL</a></th>
   <td><a href="#openssl">OpenSSL</a></td>
   <td>© 1995&ndash;1998 Eric A. Young, Tim J. Hudson<br />© 1998&ndash;2010 The OpenSSL Project</td></tr>

 <tr><th><a href="http://www.libpng.org">libpng</a></th>
   <td><a href="#png">PNG</a></td>
   <td>© 2004&ndash;2010 Glenn Randers-Pehrson</td></tr>

 <tr><th><a href="http://xmlsoft.org">libxml2</a></th>
   <td><a href="#mit">MIT</a></td>
   <td>© 1998&ndash;2009 Daniel Veillard</td></tr>

 <tr><th><a href="http://www.riscos.info/websvn/listing.php?repname=gccsdk&path=%2Ftrunk%2Fgcc4%2Frecipe%2Ffiles%2Fgcc%2Flibunixlib%2F&#a9586e56e500c7fdfb58279167b82472d">UnixLib</a></th>
   <td><a href="#unixlib">UnixLib</a></td>
   <td>© 1995&ndash;1999 Simon Callan, Nick Burrett, Nicholas Clark and Peter Burwood<br />© 1999&ndash;2009 Nick Burrett, John Tytgat, Peter Naulls,
Lee Noar, Peter Teichmann, Alex Waugh, Christian Ludlam, Theo Markettos, Graham Shaw, James Bursa and John-Mark Bell.</td></tr>

 <tr><th><a href="http://zlib.net/">ZLib</a></th>
   <td><a href="#zlib">ZLib</a></td>
   <td>© 1995&ndash;2010 Jean-loup Gailly and Mark Adler</td></tr>
</table>

<h2>Licence texts</h2>

Generic forms of the licence texts appear here where possible.  Some components
may vary the licence slightly, and our best effort has been made to detect these
changes and have the different licence listed here.  Changes in white space, etc,
were not considered.

<a name="gplv2" />
<h3>GNU General Public Licence, Version 2</h3>
<div style="background: #ddd; white-space: pre; font-family: monospace; font-size: 0.75em; border: solid 1px black; margin: 10mm; padding: 1em 0.5em"> 		    GNU GENERAL PUBLIC LICENSE
		       Version 2, June 1991

 Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 Everyone is permitted to copy and distribute verbatim copies
 of this license document, but changing it is not allowed.

			    Preamble

  The licenses for most software are designed to take away your
freedom to share and change it.  By contrast, the GNU General Public
License is intended to guarantee your freedom to share and change free
software--to make sure the software is free for all its users.  This
General Public License applies to most of the Free Software
Foundation's software and to any other program whose authors commit to
using it.  (Some other Free Software Foundation software is covered by
the GNU Lesser General Public License instead.)  You can apply it to
your programs, 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 software, or if you modify it.

  For example, if you distribute copies of such a program, whether
gratis or for a fee, you must give the recipients all the rights that
you have.  You must make sure that they, too, receive or can get the
source code.  And you must show them these terms so they know their
rights.

  We protect your rights with two steps: (1) copyright the software, and
(2) offer you this license which gives you legal permission to copy,
distribute and/or modify the software.

  Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software.  If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, 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 redistributors of a free
program will individually obtain patent licenses, in effect making the
program proprietary.  To prevent this, we have made it clear that any
patent must be licensed for everyone's free use or not licensed at all.

  The precise terms and conditions for copying, distribution and
modification follow.

		    GNU GENERAL PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. This License applies to any program or other work which contains
a notice placed by the copyright holder saying it may be distributed
under the terms of this General Public License.  The "Program", below,
refers to any such program or work, and a "work based on the Program"
means either the Program or any derivative work under copyright law:
that is to say, a work containing the Program or a portion of it,
either verbatim or with modifications and/or translated into another
language.  (Hereinafter, translation is included without limitation in
the term "modification".)  Each licensee is addressed as "you".

Activities other than copying, distribution and modification are not
covered by this License; they are outside its scope.  The act of
running the Program is not restricted, and the output from the Program
is covered only if its contents constitute a work based on the
Program (independent of having been made by running the Program).
Whether that is true depends on what the Program does.

  1. You may copy and distribute verbatim copies of the Program's
source code as you receive it, in any medium, provided that you
conspicuously and appropriately publish on each copy an appropriate
copyright notice and disclaimer of warranty; keep intact all the
notices that refer to this License and to the absence of any warranty;
and give any other recipients of the Program a copy of this License
along with the Program.

You may charge a fee for the physical act of transferring a copy, and
you may at your option offer warranty protection in exchange for a fee.

  2. You may modify your copy or copies of the Program or any portion
of it, thus forming a work based on the Program, and copy and
distribute such modifications or work under the terms of Section 1
above, provided that you also meet all of these conditions:

    a) You must cause the modified files to carry prominent notices
    stating that you changed the files and the date of any change.

    b) You must cause any work that you distribute or publish, that in
    whole or in part contains or is derived from the Program or any
    part thereof, to be licensed as a whole at no charge to all third
    parties under the terms of this License.

    c) If the modified program normally reads commands interactively
    when run, you must cause it, when started running for such
    interactive use in the most ordinary way, to print or display an
    announcement including an appropriate copyright notice and a
    notice that there is no warranty (or else, saying that you provide
    a warranty) and that users may redistribute the program under
    these conditions, and telling the user how to view a copy of this
    License.  (Exception: if the Program itself is interactive but
    does not normally print such an announcement, your work based on
    the Program is not required to print an announcement.)

These requirements apply to the modified work as a whole.  If
identifiable sections of that work are not derived from the Program,
and can be reasonably considered independent and separate works in
themselves, then this License, and its terms, do not apply to those
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distribute the same sections as part of a whole which is a work based
on the Program, the distribution of the whole must be on the terms of
this License, whose permissions for other licensees extend to the
entire whole, and thus to each and every part regardless of who wrote it.

Thus, it is not the intent of this section to claim rights or contest
your rights to work written entirely by you; rather, the intent is to
exercise the right to control the distribution of derivative or
collective works based on the Program.

In addition, mere aggregation of another work not based on the Program
with the Program (or with a work based on the Program) on a volume of
a storage or distribution medium does not bring the other work under
the scope of this License.

  3. You may copy and distribute the Program (or a work based on it,
under Section 2) in object code or executable form under the terms of
Sections 1 and 2 above provided that you also do one of the following:

    a) Accompany it with the complete corresponding machine-readable
    source code, which must be distributed under the terms of Sections
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    b) Accompany it with a written offer, valid for at least three
    years, to give any third party, for a charge no more than your
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    customarily used for software interchange; or,

    c) Accompany it with the information you received as to the offer
    to distribute corresponding source code.  (This alternative is
    allowed only for noncommercial distribution and only if you
    received the program in object code or executable form with such
    an offer, in accord with Subsection b above.)

The source code for a work means the preferred form of the work for
making modifications to it.  For an executable work, complete source
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special exception, the source code distributed need not include
anything that is normally distributed (in either source or binary
form) with the major components (compiler, kernel, and so on) of the
operating system on which the executable runs, unless that component
itself accompanies the executable.

If distribution of executable or object code is made by offering
access to copy from a designated place, then offering equivalent
access to copy the source code from the same place counts as
distribution of the source code, even though third parties are not
compelled to copy the source along with the object code.

  4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License.  Any attempt
otherwise to copy, modify, sublicense or distribute the Program is
void, and will automatically terminate your rights under this License.
However, parties who have received copies, or rights, from you under
this License will not have their licenses terminated so long as such
parties remain in full compliance.

  5. You are not required to accept this License, since you have not
signed it.  However, nothing else grants you permission to modify or
distribute the Program or its derivative works.  These actions are
prohibited by law if you do not accept this License.  Therefore, by
modifying or distributing the Program (or any work based on the
Program), you indicate your acceptance of this License to do so, and
all its terms and conditions for copying, distributing or modifying
the Program or works based on it.

  6. Each time you redistribute the Program (or any work based on the
Program), the recipient automatically receives a license from the
original licensor to copy, distribute or modify the Program subject to
these terms and conditions.  You may not impose any further
restrictions on the recipients' exercise of the rights granted herein.
You are not responsible for enforcing compliance by third parties to
this License.

  7. If, as a consequence of a court judgment or allegation of patent
infringement or for any other reason (not limited to patent issues),
conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License.  If you cannot
distribute so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you
may not distribute the Program at all.  For example, if a patent
license would not permit royalty-free redistribution of the Program by
all those who receive copies directly or indirectly through you, then
the only way you could satisfy both it and this License would be to
refrain entirely from distribution of the Program.

If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended to
apply 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
patents or other property right claims or to contest validity of any
such claims; this section has the sole purpose of protecting the
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.

  8. If the distribution and/or use of the Program is restricted in
certain countries either by patents or by copyrighted interfaces, the
original copyright holder who places the Program 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.

  9. The Free Software Foundation may publish revised and/or new versions
of the 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 Program
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 Program does not specify a version number of
this License, you may choose any version ever published by the Free Software
Foundation.

  10. If you wish to incorporate parts of the Program into other free
programs whose distribution conditions are different, 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

  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.

  12. 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 PROGRAM 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 PROGRAM (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 PROGRAM TO OPERATE WITH ANY OTHER
PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGES.

		     END OF TERMS AND CONDITIONS

	    How to Apply These Terms to Your New Programs

  If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.

  To do so, attach the following notices to the program.  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 program's name and a brief idea of what it does.>
    Copyright (C) <year>  <name of author>

    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    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.

    You should have received a copy of the GNU General Public License along
    with this program; if not, write to the Free Software Foundation, Inc.,
    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

Also add information on how to contact you by electronic and paper mail.

If the program is interactive, make it output a short notice like this
when it starts in an interactive mode:

    Gnomovision version 69, Copyright (C) year name of author
    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
    This is free software, and you are welcome to redistribute it
    under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License.  Of course, the commands you use may
be called something other than `show w' and `show c'; they could even be
mouse-clicks or menu items--whatever suits your program.

You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the program, if
necessary.  Here is a sample; alter the names:

  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
  `Gnomovision' (which makes passes at compilers) written by James Hacker.

  <signature of Ty Coon>, 1 April 1989
  Ty Coon, President of Vice

This General Public License does not permit incorporating your program into
proprietary programs.  If your program is a subroutine library, you may
consider it more useful to permit linking proprietary applications with the
library.  If this is what you want to do, use the GNU Lesser General
Public License instead of this License.
</div>

<a name="mit" />
<h3>MIT/X Licence</h3>
<div style="background: #ddd; white-space: pre; font-family: monospace; font-size: 0.75em; border: solid 1px black; margin: 10mm; padding: 1em 0.5em">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
furnished 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.
</div>

<a name="zlib" />
<h3>ZLib Licence</h3>
<div style="background: #ddd; white-space: pre; font-family: monospace; font-size: 0.75em; border: solid 1px black; margin: 10mm; padding: 1em 0.5em">  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.
</div>

<a name="ijg" />
<h3>IJG Licence</h3>
<div style="background: #ddd; white-space: pre; font-family: monospace; font-size: 0.75em; border: solid 1px black; margin: 10mm; padding: 1em 0.5em">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) 1991-2010, Thomas G. Lane, Guido Vollbeding.
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,
ltmain.sh).  Another support script, install-sh, is copyright by X Consortium
but is also freely distributable.
</div>

<a name="mng" />
<h3>MNG Licence</h3>
<div style="background: #ddd; white-space: pre; font-family: monospace; font-size: 0.75em; border: solid 1px black; margin: 10mm; padding: 1em 0.5em">The MNG Library is supplied "AS IS".  The Contributing Authors
disclaim all warranties, expressed or implied, including, without      
limitation, the warranties of merchantability and of fitness for any   
purpose.  The Contributing Authors assume no liability for direct,     
indirect, incidental, special, exemplary, or consequential damages,    
which may result from the use of the MNG 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;          
   you must not claim that you wrote the original software.            

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 specifically permit, without fee, and         
encourage the use of this source code as a component to supporting     
the MNG and JNG file format in commercial products.  If you use this   
source code in a product, acknowledgment would be highly appreciated. 
</div>

<a name="oslib" />
<h3>OSLib Licence</h3>
<div style="background: #ddd; white-space: pre; font-family: monospace; font-size: 0.75em; border: solid 1px black; margin: 10mm; padding: 1em 0.5em">The copyright holder has granted a small relaxation of the 
conditions of the GNU Public Licence, in that OSLib is itself
free software, but applications linked to it need not be.
This means that any changes to OSLib itself (the contents of
the OSLib, OSLibHelp, OSLibSrc, and OSLibSupport archives)
fall under the terms of the GNU Public Licence; but programs
written using OSLib need not be so restricted.

                   GNU GENERAL PUBLIC LICENCE
                     Version 1, February 1989

 Copyright (C) 1989 Free Software Foundation, Inc.
                    675 Mass Ave, Cambridge, MA 02139, U S A
 Everyone is permitted to copy and distribute verbatim copies
 of this licence document, but changing it is not allowed.

                            Preamble

   The licence agreements of most software companies try to keep users
at the mercy of those companies. By contrast, our General Public
Licence is intended to guarantee your freedom to share and change free
software---to make sure the software is free for all its users. The
General Public Licence applies to the Free Software Foundation's
software and to any other programme whose authors commit to using it.
You can use it for your programmes, too.

   When we speak of free software, we are referring to freedom, not
price. Specifically, the General Public Licence is designed to make
sure that you have the freedom to give away or sell copies of free
software, 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
programmes; 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 software, or if you modify it.

   For example, if you distribute copies of a such a programme, whether
gratis or for a fee, you must give the recipients all the rights that
you have. You must make sure that they, too, receive or can get the
source code. And you must tell them their rights.

   We protect your rights with two steps: (1) copyright the software, and
(2) offer you this licence which gives you legal permission to copy,
distribute and/or modify the software.

   Also, for each author's protection and ours, we want to make certain
that everyone understands that there is no warranty for this free
software. If the software is modified by someone else and passed on, we
want its recipients to know that what they have is not the original, so
that any problems introduced by others will not reflect on the original
authors' reputations.

  The precise terms and conditions for copying, distribution and
modification follow.

                    GNU GENERAL PUBLIC LICENCE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

   0. This Licence Agreement applies to any programme or other work which
contains a notice placed by the copyright holder saying it may be
distributed under the terms of this General Public Licence. The
"Programme", below, refers to any such programme or work, and a "work based
on the Programme" means either the Programme or any work containing the
Programme or a portion of it, either verbatim or with modifications. Each
licensee is addressed as "you".

   1. You may copy and distribute verbatim copies of the Programme's source
code as you receive it, in any medium, provided that you conspicuously and
appropriately publish on each copy an appropriate copyright notice and
disclaimer of warranty; keep intact all the notices that refer to this
General Public Licence and to the absence of any warranty; and give any
other recipients of the Programme a copy of this General Public Licence
along with the Programme. You may charge a fee for the physical act of
transferring a copy.

   2. You may modify your copy or copies of the Programme or any portion of
it, and copy and distribute such modifications under the terms of Paragraph
1 above, provided that you also do the following:

         a) cause the modified files to carry prominent notices stating that
      you changed the files and the date of any change; and

         b) cause the whole of any work that you distribute or publish, that
      in whole or in part contains the Programme or any part thereof, either
      with or without modifications, to be licensed at no charge to all
      third parties under the terms of this General Public Licence (except
      that you may choose to grant warranty protection to some or all
      third parties, at your option).

         c) If the modified programme normally reads commands interactively when
      run, you must cause it, when started running for such interactive use
      in the simplest and most usual way, to print or display an
      announcement including an appropriate copyright notice and a notice
      that there is no warranty (or else, saying that you provide a
      warranty) and that users may redistribute the programme under these
      conditions, and telling the user how to view a copy of this General
      Public Licence.

         d) You may charge a fee for the physical act of transferring a
      copy, and you may at your option offer warranty protection in
      exchange for a fee.

Mere aggregation of another independent work with the Programme (or its
derivative) on a volume of a storage or distribution medium does not bring
the other work under the scope of these terms.

   3. You may copy and distribute the Programme (or a portion or derivative of
it, under Paragraph 2) in object code or executable form under the terms of
Paragraphs 1 and 2 above provided that you also do one of the following:

      a) accompany it with the complete corresponding machine-readable
      source code, which must be distributed under the terms of
      Paragraphs 1 and 2 above; or,

      b) accompany it with a written offer, valid for at least three
      years, to give any third party free (except for a nominal charge
      for the cost of distribution) a complete machine-readable copy of the
      corresponding source code, to be distributed under the terms of
      Paragraphs 1 and 2 above; or,

      c) accompany it with the information you received as to where the
      corresponding source code may be obtained. (This alternative is
      allowed only for noncommercial distribution and only if you
      received the programme in object code or executable form alone.)

Source code for a work means the preferred form of the work for making
modifications to it. For an executable file, complete source code means
all the source code for all modules it contains; but, as a special
exception, it need not include source code for modules which are standard
libraries that accompany the operating system on which the executable
file runs, or for standard header files or definitions files that
accompany that operating system.

  4. You may not copy, modify, sublicense, distribute or transfer the
Programme except as expressly provided under this General Public Licence.
Any attempt otherwise to copy, modify, sublicense, distribute or transfer
the Programme is void, and will automatically terminate your rights to use
the Programme under this Licence. However, parties who have received
copies, or rights to use copies, from you under this General Public
Licence will not have their licences terminated so long as such parties
remain in full compliance.

   5. By copying, distributing or modifying the Programme (or any work based
on the Programme) you indicate your acceptance of this licence to do so,
and all its terms and conditions.

   6. Each time you redistribute the Programme (or any work based on the
Programme), the recipient automatically receives a licence from the original
licensor to copy, distribute or modify the Programme subject to these
terms and conditions. You may not impose any further restrictions on the
recipients' exercise of the rights granted herein.

   7. The Free Software Foundation may publish revised and/or new versions
of the General Public Licence 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 Programme
specifies a version number of the licence 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 Programme does not specify a version number of
the licence, you may choose any version ever published by the Free Software
Foundation.

   8. If you wish to incorporate parts of the Programme into other free
programmes whose distribution conditions are different, 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

  9. BECAUSE THE PROGRAMME IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
FOR THE PROGRAMME, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHEN
OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
PROVIDE THE PROGRAMME "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 PROGRAMME IS WITH YOU. SHOULD THE
PROGRAMME PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
REPAIR OR CORRECTION.

  10. 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 PROGRAMME 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 PROGRAMME (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 PROGRAMME TO OPERATE WITH ANY OTHER
PROGRAMMES), 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 Programmes

  If you develop a new programme, and you want it to be of the greatest
possible use to humanity, the best way to achieve this is to make it
free software which everyone can redistribute and change under these
terms.

  To do so, attach the following notices to the programme. 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 programme's name and a brief idea of what it does.>
      Copyright (C) 19yy <name of author>

      This programme is free software; you can redistribute it and/or modify
      it under the terms of the GNU General Public Licence as published by
      the Free Software Foundation; either version 1, or (at your option)
      any later version.

      This programme 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 Licence for more details.

      You should have received a copy of the GNU General Public Licence
      along with this programme; 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.

If the programme is interactive, make it output a short notice like this
when it starts in an interactive mode:

      Gnomovision version 69, Copyright (C) 19xx name of author
      Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
      This is free software, and you are welcome to redistribute it
      under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the
appropriate parts of the General Public Licence. Of course, the
commands you use may be called something other than `show w' and `show
c'; they could even be mouse-clicks or menu items--whatever suits your
programme.

You should also get your employer (if you work as a programmer) or your
school, if any, to sign a "copyright disclaimer" for the programme, if
necessary. Here is a sample; alter the names:

      Yoyodyne, Inc., hereby disclaims all copyright interest in the
      programme `Gnomovision' (a programme to direct compilers to make passes
      at assemblers) written by James Hacker.

      <signature of Ty Coon>, 1 April 1989
      Ty Coon, President of Vice

That's all there is to it!
</div>

<a name="openssl" />
<h3>OpenSSL Licence</h3>
<div style="background: #ddd; white-space: pre; font-family: monospace; font-size: 0.75em; border: solid 1px black; margin: 10mm; padding: 1em 0.5em">  The OpenSSL toolkit stays under a dual license, i.e. both the conditions of
  the OpenSSL License and the original SSLeay license apply to the toolkit.
  See below for the actual license texts. Actually both licenses are BSD-style
  Open Source licenses. In case of any license issues related to OpenSSL
  please contact openssl-core@openssl.org.

  OpenSSL License
  ---------------

/* ====================================================================
 * Copyright (c) 1998-2008 The OpenSSL Project.  All rights reserved.
 *
 * 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.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

 Original SSLeay License
 -----------------------

/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 * 
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 * 
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 * 
 * 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 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 acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from 
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 * 
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS 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 AUTHOR OR 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.
 * 
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */
</div>

<a name="png" />
<h3>PNG Licence</h3>
<div style="background: #ddd; white-space: pre; font-family: monospace; font-size: 0.75em; border: solid 1px black; margin: 10mm; padding: 1em 0.5em"> * This code is released under the libpng license.
 *
 * libpng versions 1.2.6, August 15, 2004, through 1.4.1, February 25, 2010, are
 * Copyright (c) 2004, 2006-2010 Glenn Randers-Pehrson, and are
 * distributed according to the same disclaimer and license as libpng-1.2.5
 * with the following individual added to the list of Contributing Authors:
 *
 *    Cosmin Truta
 *
 * libpng versions 1.0.7, July 1, 2000, through 1.2.5, October 3, 2002, are
 * Copyright (c) 2000-2002 Glenn Randers-Pehrson, 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
 *    Gilles Vollant
 *
 * 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.
 *
 * libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
 * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson, 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
 * 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
 *
 * 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.
 */
</div>

<a name="unixlib" />
<h3>UnixLib Licence</h3>
<div style="background: #ddd; white-space: pre; font-family: monospace; font-size: 0.75em; border: solid 1px black; margin: 10mm; padding: 1em 0.5em">In January 2005, permission was obtained from all relevant contributors
by Peter Naulls to license all past and present contributions to UnixLib
(where possible) under the revised BSD license.  The license is included
in the next section and is applicable to all code in UnixLib that does not
have an explicit license in its source.

Prior to 4th January 2005 and after May 2001, UnixLib contained code licensed
under the GNU General Public License, and versions of UnixLib produced
between these dates are subject to the provisions of the GPL.  We realised
that this might cause potential problems with the wider use of UnixLib in
RISC OS, and along with the desire to clarify the overall licensing status of
UnixLib, GPL code was removed from UnixLib and the above permission from all
copyright holders allowed UnixLib contributions to be relicensed as per the
revised BSD license.  The GPL is therefore not included in this notice
as it is no longer relevant to UnixLib.


Practical notes on using UnixLib in your own programs:

This is a plain English version of guidelines for use of UnixLib in
your programs.  It does not override any of the licenses included
below, but is intended to state instances when it may be used in
free and non-free software.  Where there is contradiction or
ambiguity in this wording, please refer to the specifics of the licence
in question.  These recommendations are based upon our understading
of the GPL/LGPL and BSD licenses and are subject to change should
our understanding of the topics improve.

 - Because UnixLib contains code that is subject to the Lesser GNU
   Public License, the LGPL is the overriding consideration when
   linking UnixLib to programs (unless the program itself is GPL).

 - You are free to use sections of UnixLib in your own programs
   subject to the conditions of that code.  If the entirety of
   that code is under a BSD license, then you can generally use
   that code as you see fit, and there is no further obligation
   from you as long as the copyright notice remains.  If you
   use LGPL code in your program, then your program must also be
   distributed under the LGPL (or GPL).

 - If you use UnixLib in its intended original form - that is as a
   supporting library for ported programs to RISC OS - then your program
   is subject to the LGPL; or the GPL if the program is covered by that.
   Note that you must make the source and any modifications available to for
   both if requested.  This is of course equally true if you write an original
   GPL program using UnixLib.  In most cases, no additional action is
   required of you, especially since source is usually readibly available.

 - If you use UnixLib for a non-free program - whether that's commercial or
   otherwise, then you should carefully read section 6 of the LGPL.  This
   applies, because at the present time, there is no practical method of
   dynamic linking on RISC OS.  At such time that UnixLib is available as a
   shared library, then programs dynamically linking to it will no longer be
   subject to the LPGL as applied to UnixLib.

 - Section 6 means that in practice, you must supply, or offer to
   supply either source or object code for your program.
   This is mainly to allow rebuilding of the executable program
   with later or modified versions of UnixLib.  You must of course
   supply (or better, contribute to the GCCSDK project) any
   modifications you make to UnixLib upon request.


Recommended reading:

Frequently Asked Questions about the GNU GPL
http://www.fsf.org/licenses/gpl-faq.html (has some sections on LGPL)

About the justifications for using LGPL
http://www.fsf.org/licenses/why-not-lgpl.html



===========================================================================

 Copyright (c) 1995-2009 UnixLib Developers
 All rights reserved.
 
 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. The name of the author may not be used to endorse or promote products
    derived from this software without specific prior written permission.
 
 THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 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 AUTHOR 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.

===========================================================================

Portions of UnixLib are copyright The Regents of the University of
California.

Portions of this library are copyright Sun Microsystems, Inc.  The 

Portions of this library are derived from the GNU C Library and fall under
the GNU Library General Public License.

Portions of this library are copyright Henry Spencer.

Portions of this library are copyright The Regents of the University of
California, Sun Microsystems, Inc., Scriptics Corporation, ActiveState
Corporation and other parties.

Portions of this library are copyright PostgreSQL Global Development Group.

The licenses for the above are duplicated below.


===========================================================================

 Copyright (c) The Regents of the University of California.
 All rights reserved.

 This code is derived from software contributed to Berkeley by
 Chris Torek.

 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 acknowledgement:
        This product includes software developed by the University of
        California, Berkeley and its contributors.
 4. Neither the name of the University nor the names of its contributors
    may be used to endorse or promote products derived from this software
    without specific prior written permission.

 THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 ANY EXPRESS 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 REGENTS OR 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.

===========================================================================

 Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.

 Developed at SunPro, a Sun Microsystems, Inc. business.
 Permission to use, copy, modify, and distribute this
 software is freely granted, provided that this notice
 is preserved.

===========================================================================

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     Appendix: How to Apply These Terms to Your New Libraries

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  <signature of Ty Coon>, 1 April 1990
  Ty Coon, President of Vice

That's all there is to it!

===========================================================================

Copyright (c) 1998, 1999 Henry Spencer.  All rights reserved.

Development of this software was funded, in part, by Cray Research Inc.,
UUNET Communications Services Inc., Sun Microsystems Inc., and Scriptics
Corporation, none of whom are responsible for the results.  The author
thanks all of them. 

Redistribution and use in source and binary forms -- with or without
modification -- are permitted for any purpose, provided that
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I'd appreciate being given credit for this package in the documentation
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

===========================================================================

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===========================================================================

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Portions Copyright (c) 1994, The Regents of the University of California

Permission to use, copy, modify, and distribute this software and its
documentation for any purpose, without fee, and without a written agreement
is hereby granted, provided that the above copyright notice and this
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IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, INCLUDING
LOST PROFITS, ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS
DOCUMENTATION, EVEN IF THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE
POSSIBILITY OF SUCH DAMAGE.

THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
AND FITNESS FOR A PARTICULAR PURPOSE.  THE SOFTWARE PROVIDED HEREUNDER IS
ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATIONS TO
PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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