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[plcapi.git] / trunk / psycopg2 / LICENSE

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+psycopg and the GPL
+===================
+
+psycopg 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. See file COPYING for details.
+
+As a special exception, specific permission is granted for the GPLed
+code in this distribition to be linked to OpenSSL and PostgreSQL libpq
+without invoking GPL clause 2(b).
+
+Note that the GPL was chosen to avoid proprietary adapters based on
+psycopg code. Using psycopg in a proprietary product (even bundling
+psycopg with the proprietary product) is fine as long as:
+
+ 1. psycopg is called from Python only using only the provided API
+    (i.e., no linking with C code and no C modules based on it); and
+
+ 2. all the other points of the GPL are respected (you offer a copy
+    of psycopg's source code, and so on.)
+
+Alternative licenses
+====================
+
+If you prefer you can use the Zope Database Adapter ZPsycopgDA (i.e.,
+every file inside the ZPsycopgDA directory) user the ZPL license as
+published on the Zope web site, http://www.zope.org/Resources/ZPL.
+
+Also, the following BSD-like license applies (at your option) to the
+files following the pattern psycopg/adapter*.{h,c} and
+psycopg/microprotocol*.{h,c}:
+
+ 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.
+
+psycopg 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.
+
+Proprietary licenses
+====================
+
+A non-exclusive license is available for companies that want to include
+psycopg in their proprietary products without respecting the spirit of the
+GPL. The price of the license is one day of development done by the author,
+at the consulting fee he applies to his usual customers at the day of the
+request.