GNU Project

copyleft license primarily for free software documentation

series of free software licenses

GNU ( ) is an extensive collection of free software (387 packages ), which can be used as an operating system or can be used in parts with other operating systems. The use of the completed GNU tools led to the family of operating systems popularly known as Linux. Most of GNU is licensed under the GNU Project's own General Public License (GPL).

GNOME () is a free and open-source desktop environment for Linux and other Unix-like operating systems. It is distributed as the default desktop environment of many major Linux distributions, including Debian, Fedora Linux, Ubuntu, Red Hat Enterprise Linux, and SUSE Linux Enterprise, and is the default in Oracle Solaris, a Unix operating system.

REDIRECT Linux

free software license scheme based on GPL that allows a piece of software to be used in proprietary software

free software project

free software license based on the AGPLv1 and GPLv3

manifesto written by Richard Stallman

former free content encyclopedia

software forge, website, and associated engine

license exception of GNU General Public License

partially modified GPL to account for Ada generic instantiation

non-governmental organization

Wikimedia template

Rules for consistent program functionality

selected essays of Richard Stallman

gpl-violations.org is a not-for-profit project founded and led by Harald Welte in 2004. It works to make sure software licensed under the GNU General Public License (GPL) is not used in ways prohibited by the license.

exception to the free software license when dealing with fonts