gnu.org
The GNU Operating System and the Free Software Movement
Since 1983, developing the free Unix style operating system GNU, so that computer users can have the freedom to share and improve the software they use.
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savannah.gnu.org
Welcome [Savannah]
Savannah is a central point for development, distribution and maintenance of free software, both GNU and non-GNU.
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planet.gnu.org
Planet GNU
Aggregation of development blogs from the GNU Project www @ Savannah Malware in Proprietary Software - June 2025 Additions The initial injustice of proprietary software often leads to further injustices: malicious functionalities. The introduction of unjust techniques in nonfree software, such as...
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audio-video.gnu.org
Audio/Video - GNU Project - Free-Software Foundation
Audio/Video - GNU Project - Free-Software Foundation GNU Operating System Audio/Video: redirect Please go to the Audio & Video section of www.gnu.org .
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gnu.org
licenses
Licenses - GNU Project - Free Software Foundation
software. To make it free software, you need to release it under a free software license. We normally use the GNU General Public License (GNU GPL), specifying version 3 or any later version, but occasionally we use other free software...
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gcc.gnu.org
java
GCC, the GNU Compiler Collection - GNU Project
The GNU Compiler Collection includes front ends for C, C++, Objective-C, Fortran, Ada, Go, D, Modula-2, and COBOL as well as libraries for these languages (libstdc++,...). GCC was originally written as the compiler for the GNU operating...
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gnu.org
licenses › gpl.html
The GNU General Public License v3.0 - GNU Project - Free Software Foundation
Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The GNU General Public License is a free, copyleft license for software and other kinds of works. The licenses...
gnu.org
licenses › license-list.html
Various Licenses and Comments about Them - GNU Project - Free Software Foundation
We classify a license according to certain key criteria: Whether it qualifies as a free software license. Whether it is a copyleft license. Whether it is compatible with the GNU GPL. Unless otherwise specified, compatible licenses are compatible with both GPLv2 and GPLv3. Whether it causes any...
gnu.org
software › emacs
GNU Emacs - GNU Project
An extensible, customizable, free/libre text editor — and more. At its core is an interpreter for Emacs Lisp, a dialect of the Lisp programming language with extensions to support text editing. The features of GNU Emacs include Content-aware editing modes, including syntax coloring, for many file...
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gnu.org
licenses › gpl-2.0.html
GNU General Public License v2.0 - GNU Project - Free Software Foundation
Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public License is intended to guarantee your...