(Raspbian is a port of Debian Wheezy armhf. As such, the packages built and released as part of Raspbian include a wide variety of licenses. A summary is included below: GNU General Public License (common) GNU Lesser General Public License (common) GNU Library General Public License (common) Modified BSD License (common) Perl Artistic license (common) Apache License Expat/MIT-style licenses zlib-style licenses LaTeX Project Public License Python Software Foundation License Ruby's License PHP License W3C Software Notice and License OpenSSL License Sleepycat License Common UNIX Printing System License Agreement vhf Public License "No problem Bugroff" license Unmodified BSD License (also known as the original or 4-clause BSD license. It included an advertising requirement and is now deprecated even by the BSD project.) public domain (not a license, strictly speaking) IBM Public License Version 1.0 A complete description of these licenses and links to where the license text is at the following URL: http://www.debian.org/legal/licenses/ )