LICENSE

HTTomo is dual licenced under the Apache V2 and GPL V3 licences both of 
which appear below. The following section from the apache website
details the compatibility of ApacheV2 with GPLV3 and explains the 
requirement for the dual licence.


      From http://www.apache.org/licenses/GPL-compatibility.html

The Free Software Foundation considers the Apache License, Version 
2.0 to be a free software license, compatible with version 3 of the GPL.
The Software Freedom Law Center provides practical advice for developers 
about including permissively licensed source.

Apache 2 software can therefore be included in GPLv3 projects, because 
the GPLv3 license accepts our software into GPLv3 works. However, GPLv3 
software cannot be included in Apache projects. The licenses are incompatible 
in one direction only, and it is a result of ASF's licensing philosophy and 
the GPLv3 authors' interpretation of copyright law.

This licensing incompatibility applies only when some Apache project software 
becomes a derivative work of some GPLv3 software, because then the Apache 
software would have to be distributed under GPLv3. This would be incompatible 
with ASF's requirement that all Apache software must be distributed under the 
Apache License 2.0.

We avoid GPLv3 software because merely linking to it is considered by the GPLv3 
authors to create a derivative work. We want to honor their license. Unless GPLv3 
licensors relax this interpretation of their own license regarding linking, our 
licensing philosophies are fundamentally incompatible. This is an identical issue 
for both GPLv2 and GPLv3.


    HTTomo Licence
    ============

HTTomo makes use of some GPLv3 libraries in the following packages:
    HTTomolibGPU (Depends on ToMoBAR and ASTRA-Toolbox)

If your use of the code makes use of these imports, then the software is licenced under 
GPLV3 as required by the licence.  However if you do not use or redistribute the plugins
containing these imports, the software may be considered licenced under the Apache V2 
licence, specifically all of the core functionality of HTTomo.


Both licences now follow.




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violation by some reasonable means, this is the first time you have
received notice of violation of this License (for any work) from that
copyright holder, and you cure the violation prior to 30 days after
your receipt of the notice.

  Termination of your rights under this section does not terminate the
licenses of parties who have received copies or rights from you under
this License.  If your rights have been terminated and not permanently
reinstated, you do not qualify to receive new licenses for the same
material under section 10.

  9. Acceptance Not Required for Having Copies.

  You are not required to accept this License in order to receive or
run a copy of the Program.  Ancillary propagation of a covered work
occurring solely as a consequence of using peer-to-peer transmission
to receive a copy likewise does not require acceptance.  However,
nothing other than this License grants you permission to propagate or
modify any covered work.  These actions infringe copyright if you do
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covered work, you indicate your acceptance of this License to do so.

  10. Automatic Licensing of Downstream Recipients.

  Each time you convey a covered work, the recipient automatically
receives a license from the original licensors, to run, modify and
propagate that work, subject to this License.  You are not responsible
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  An "entity transaction" is a transaction transferring control of an
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  You may not impose any further restrictions on the exercise of the
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  11. Patents.

  A "contributor" is a copyright holder who authorizes use under this
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  A contributor's "essential patent claims" are all patent claims
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but do not include claims that would be infringed only as a
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  Each contributor grants you a non-exclusive, worldwide, royalty-free
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  In the following three paragraphs, a "patent license" is any express
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  If you convey a covered work, knowingly relying on a patent license,
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patent license for this particular work, or (3) arrange, in a manner
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actual knowledge that, but for the patent license, your conveying the
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in a country, would infringe one or more identifiable patents in that
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  If, pursuant to or in connection with a single transaction or
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work and works based on it.

  A patent license is "discriminatory" if it does not include within
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conditioned on the non-exercise of one or more of the rights that are
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work if you are a party to an arrangement with a third party that is
in the business of distributing software, under which you make payment
to the third party based on the extent of your activity of conveying
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conveyed by you (or copies made from those copies), or (b) primarily
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contain the covered work, unless you entered into that arrangement,
or that patent license was granted, prior to 28 March 2007.

  Nothing in this License shall be construed as excluding or limiting
any implied license or other defenses to infringement that may
otherwise be available to you under applicable patent law.

  12. No Surrender of Others' Freedom.

  If conditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
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covered work so as to satisfy simultaneously your obligations under this
License and any other pertinent obligations, then as a consequence you may
not convey it at all.  For example, if you agree to terms that obligate you
to collect a royalty for further conveying from those to whom you convey
the Program, the only way you could satisfy both those terms and this
License would be to refrain entirely from conveying the Program.

  13. Use with the GNU Affero General Public License.

  Notwithstanding any other provision of this License, you have
permission to link or combine any covered work with a work licensed
under version 3 of the GNU Affero General Public License into a single
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License will continue to apply to the part which is the covered work,
but the special requirements of the GNU Affero General Public License,
section 13, concerning interaction through a network will apply to the
combination as such.

  14. Revised Versions of this License.

  The Free Software Foundation may publish revised and/or new versions of
the GNU 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
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option of following the terms and conditions either of that numbered
version or of any later version published by the Free Software
Foundation.  If the Program does not specify a version number of the
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by the Free Software Foundation.

  If the Program specifies that a proxy can decide which future
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to choose that version for the Program.

  Later license versions may give you additional or different
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author or copyright holder as a result of your choosing to follow a
later version.

  15. Disclaimer of Warranty.

  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,
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  16. Limitation of Liability.

  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
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.

  17. Interpretation of Sections 15 and 16.

  If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.


   END OF TERMS AND CONDITIONS

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