Mediaboss Marketing

Published software should be free 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), but occasionally we use other free software licenses. We use only licenses that are compatible with the GNU GPL for GNU software.

Documentation for free software should be free documentation, so that people can redistribute it and improve it along with the software it describes. To make it free documentation, you need to release it under a free documentation license. We normally use the GNU Free Documentation License (GNU FDL), but occasionally we use other free documentation licenses.

If you've started a new project and you're not sure what license to use, How to choose a license for your own work details our recommendations in an easy-to-follow guide. If you just want a quick list reference, we have a page that names our recommended copyleft licenses.

We also have a page that discusses the BSD License Problem.

Our documentation licenses are currently being revised, and we welcome your comments on the proposed texts. Please visit our license update site to read the current drafts and participate in the process.

We have a number of resources to help people understand and use our various licenses:

The GNU General Public License is often called the GNU GPL for short; it is used by most GNU programs, and by more than half of all free software packages. The latest version is version 3.

The GNU Lesser General Public License is used by a few (not by any means all) GNU libraries. The latest version is version 3.

The GNU Affero General Public License is based on the GNU GPL, but has an additional term to allow users who interact with the licensed software over a network to receive the source for that program. We recommend that people consider using the GNU AGPL for any software which will commonly be run over a network. The latest version is version 3.

The GNU Free Documentation License is a form of copyleft intended for use on a manual, textbook or other document to assure everyone the effective freedom to copy and redistribute it, with or without modifications, either commercially or non-commercially. The latest version is 1.3.

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Licenses - GNU Project - Free Software Foundation