GNU General Public License

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GNU General Public License

GNU General Public License

A software license from the Free Software Foundation (FSF) that ensures every user receives the essential freedoms that define "free" software, which is free of restrictions (see free software). Also called "GPL" and "GNU GPL," it was created to distribute the software of the GNU operating system (see GNU). Approximately 70% of free software packages are released under this license, including most GNU programs and thousands of others. The GNU General Public License is also considered an open source license (see open source).

Copyleft, Not Copyright
The license embodies the Free Software Foundation's "copyleft" rule, which means that anyone is allowed to make changes or extend the source code and redistribute it as long as the changes are clearly marked, and the modified work is also licensed under the GNU General Public License.

Version 3 (GPLv3)
In 2007, Version 3 of the license was released to address several issues. It forbids Tivoization, which is the practice of designing hardware to prevent modified software from running on it (see Tivoization), and it is designed to yield results that are more uniform between countries despite variations in their copyright laws. GPLv3 also provides explicit protection to users and redistributors of a program against being sued for patent infringements by organizations connected with the program's development.

The GNU Lesser GPL (LGPL)
The GNU Lesser General Public License is meant for free software that allows linking with non-free software. It was originally called the "GNU Library GPL," but the name was changed to remove the implication that all libraries should be licensed this way. "Lesser" means the license does less to protect the user's freedom than the regular GNU GPL. See GNU Affero General Public License, free software, open source, copyright, Free Software Foundation and GNU.



The GPL Notification
Increasingly, people open up consumer electronics packages and find a GPL license inside. This license from NETGEAR's Google TV set-top box was printed in September 2012.
References in periodicals archive ?
For example, the Micropolis GPL License Notice, in a provision entitled "ADDITIONAL TERMS per GNU GPL Section 7" seeks to eliminate every conceivable warranty, including the warranty of noninfringement.
All Alkacon OAMP modules are released as full Open Source under the GNU GPL version 3.
zButterfly is a Vuze-based Open Source project provided under the GNU GPL License.
Today the GNU GPL is the most widely used free software license, and its author, the FSF, works to help the wider community use and comprehend it.
OrecX's decision to license its recording software under the GNU GPL is just what customers like InterMedi@ need.
Srinivas has argued for the extension of the GNU GPL into the protection of plant varieties, agro-machinery and related agricultural products.
The GNU GPL is a form of licensing popularly applied to open source software.
OpenNMS is available to everyone under an open source license (the GNU GPL, version 3), but for those companies that can't use that license without exposing either proprietary features or trade secrets to competitors, purchasing the "Powered by OpenNMS" program will allow them greater licensing options.
The GNU GPL is the most widely used free software license worldwide: almost three quarters of all free software programs (also known as "Free/Libre and Open Source Software", or FLOSS) are distributed under this license.
The latest version of OrangeHRM is available free of charge under the GNU GPL open-source license.
This is the first time that such a complex hardware design has been released under the GNU GPL reflecting Sun's continued commitment to the open source development model and to offering customers greater choice.