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). 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.