Included below is version 0.2 of the license that we are currently
using for the Swiss Ephemeris Free Edition. The license
is called the Swiss Ephemeris Public License (or "SEPL"), and qualifies as
an Open Source license. It is thus appropriate for people wishing to write
software under the Open Source model where all source code to the software
is made available to all users and can be freely modified and redistributed.
To develop software with the Swiss Ephemeris Free Edition, simply meet the
requirements in the SEPL. Your software can be licensed by any license that
permits the requirements in section 6.
If you do not meet the requirements in the SEPL, for example if
- you develop and distribute software which is sold for a fee higher than a
reasonable copy charge
- or/and you develop and distribute software which is not published under an
Open Source or equivalent license
you must purchase the Swiss Ephemeris Professional Edition under the Swiss
Ephemeris Professional License.
Comments to the license:
'Legally' developed in §5 means either developed under this license, §6, or
under a professional license.
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THE SWISS EPHEMERIS PUBLIC LICENSE (SEPL)
version 0.2
Copyright (C) 1998 Astrodienst AG, Switzerland.
Everyone is permitted to copy and
distribute this license document.
This license applies to any software containing a notice placed by the
copyright holder saying that it may be distributed under the terms of the
SEPL. Such software is herein referred to as the Swiss Ephemeris
Software (SE). This license covers modification and distribution of the SE,
use of third-party application programs based on the
SE, and development of free software which uses the SE.
Granted Rights
1. You are granted the rights set forth in this license provided you agree
to any and all conditions in this license. Whole or partial distribution of
the SE in any form signifies acceptance of this license.
2. You may copy and distribute the SE provided that
the entire package is distributed, including this License.
3. You may make modifications to the SE files and distribute your
modifications in a form distinct from the SE. The following
restrictions apply to modifications:
a. Modifications must not alter or remove any copyright notices in the SE.
b. If modifications to the SE are released under this
license, a non-exclusive right is granted to the holder of the
copyright of the unmodified SE to distribute your
modification in future versions of the SE provided such
versions remain available under these terms in addition to any
other license.
4. You may distribute machine-executable forms of the SE or
machine-executable forms of modified versions of the SE, provided that
you meet these restrictions:
a. You accompany the SE with this license.
b. You must ensure that all recipients of the machine-executable
forms are also able to receive the complete machine-readable
source code to the distributed SE, including all
modifications, without any charge beyond the costs of data
transfer.
c. You ensure that all modifications included in the
machine-executable forms are available under the terms of this
license.
5. You may use the original or modified versions of the Swiss Ephemeris
Software to compile, link and run application programs legally developed by
you or third parties.
6. You may develop application programs, reusable components and other
software items that link with the original or modified versions of the Swiss
Ephemeris Software. These items, when distributed in machine-executable form,
have the following restrictions:
a. You must ensure that all recipients of machine-executable forms
of these items are also able to receive and use the complete
machine-readable source code to the items without any charge
beyond the costs of data transfer.
b. You must explicitly license all recipients of your items to use
and re-distribute original and modified versions of the items in
both machine-executable and source code forms under terms
identical to those under which they received the items.
7. The trademarks 'Swiss Ephemeris' and 'Swiss Ephemeris inside' and the
associated icons may be used for promoting software, products or services
which use or contain the Swiss Ephemeris.
The names of the authors of the Swiss Ephemeris Software and of the
Copyright Holder may not be used to endorse or promote products or services
derived from or linking to the Swiss Ephemeris Software without specific
prior written permission.
This license file and the copyright notices in the source files are the
onlyplaces where the author's names may legally appear without specific
prior written permission.
Limitations of Liability
In no event shall the authors of the Swiss Ephemeris Software or their
employers be liable for any lost revenue or profits or other direct,
indirect, special, incidental or consequential damages, even if they have
been advised of the possibility of such damages.
No Warranty
The Swiss Ephemeris Software is provided AS IS with NO WARRANTY OF ANY KIND,
INCLUDING THE WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A
PARTICULAR PURPOSE.
| Copyright © 1998 Astrodienst AG This license is based on, but not identical to the QPL by Troll Tech. | Questions? Ask swisseph@astro.com
|