The overal pimcore project is licensed under the terms of a modified BSD Licence. By using pimcore you have to be aware and have to accept and respect that the pimcore distribution includes several third-party Open-Source libraries, which are licensed under their respective Open-Source licenses.
License: GPLv3
pimcore includes the GPLv3 version of the ExtJS JavaScript framework.
http://www.sencha.com/license/
License: MIT License
http://symfony.com/license
License: MIT License http://www.doctrine-project.org/ https://github.com/doctrine/doctrine2/blob/master/LICENSE
License: MIT or GPLv2
http://jquery.org/license
License: LGPL / GPLv2 / MPL
http://ckeditor.com/license
License: MIT
http://www.opensource.org/licenses/mit-license.php
License: MIT
https://raw.github.com/sstephenson/prototype/master/LICENSE
License: Apache 2.0
http://www.opensource.org/licenses/Apache-2.0
License: BSD-3-Clause http://opensource.org/licenses/BSD-3-Clause
License: MIT
http://opensource.org/licenses/mit-license.php
License: Creative Commons Attribution 2.5 License http://www.famfamfam.com/lab/icons/silk/
License: MIT
http://opensource.org/licenses/mit-license.php
License: BSD-3-Clause http://opensource.org/licenses/BSD-3-Clause
License: MIT or GPL-3.0+ http://hybridauth.sourceforge.net/licenses.html
License: MIT http://swiftmailer.org/ https://github.com/swiftmailer/swiftmailer/blob/master/LICENSE
License: Apache 2.0
http://www.opensource.org/licenses/Apache-2.0
License: Apache 2.0
http://www.opensource.org/licenses/Apache-2.0
License: Apache 2.0
http://www.opensource.org/licenses/Apache-2.0
License: MIT
http://opensource.org/licenses/mit-license.php
License: MIT
http://opensource.org/licenses/mit-license.php
License: BSD-3-Clause http://opensource.org/licenses/BSD-3-Clause
License: Apache 2.0 or GPLv2 http://www.opensource.org/licenses/Apache-2.0
License: MIT http://opensource.org/licenses/mit-license.php
License: MIT http://opensource.org/licenses/mit-license.php
License: MIT http://opensource.org/licenses/mit-license.php
License: MIT http://opensource.org/licenses/mit-license.php
License: MIT http://opensource.org/licenses/mit-license.php
License: MIT http://opensource.org/licenses/mit-license.php
License: MIT http://opensource.org/licenses/mit-license.php
License: MIT http://opensource.org/licenses/mit-license.php
License: Revised BSD https://github.com/neitanod/forceutf8/
License: MIT https://github.com/egulias/EmailValidator
License: LGPL-v3 https://github.com/alexdebril/rss-atom-bundle
This information has no guarantee of completeness and is subject to change.
Please also check packages listed in composer.json.