GNU Affero General Public License
|Author||Free Software Foundation|
|Publisher||Free Software Foundation, Inc.|
|Published||November 19, 2007|
|GPL compatible||Yes (permits linking with GNU GPLv3) |
|Linking from code with a different license||Only with GNU GPLv3. The GNU AGPL terms will apply for the GNU AGPL part in a combined work.|
The GNU Affero General Public License is a free, copyleft license published by the Free Software Foundation in November 2007, and based on the GNU General Public License, version 3 and the Affero General Public License.
The Free Software Foundation has recommended that the GNU AGPLv3 be considered for any software that will commonly be run over a network. The Open Source Initiative approved the GNU AGPLv3 as an open source license in March 2008 after the company Funambol submitted it for consideration.
Compatibility with the GPL
GNU AGPLv3 and GPLv3 licenses each include clauses (in section 13 of each license) that together achieve a form of mutual compatibility for the two licenses. These clauses explicitly allow the "conveying" of a work formed by linking code licensed under the one license against code licensed under the other license, despite the licenses otherwise not allowing relicensing under the terms of each other. In this way, the copyleft of each license is relaxed to allow distributing such combinations.
Examples of applications under GNU AGPL
Flask developer Armin Ronacher noted in 2013 that the GNU AGPL is a "terrible success" as "vehicle for dual commercial licensing" and gave Humhub, MongoDB, OpenERP, RethinkDB, Shinken, Slic3r, SugarCRM, and WURFL as examples.
Some of the best-known examples of GNU AGPL licensed software include:
- the NoSQL database BerkeleyDB
- the distributed social networking service Diaspora
- the application development and maintenance software Launchpad
- the cross-platform document-oriented database MongoDB
- the enterprise resource planning platform Odoo
- the file hosting services ownCloud
- the integrated development environment for the statistics language R, RStudio
- Jaspert, Joerg (November 28, 2008). "ftp.debian.org: Is AGPLv3 DFSG-free?". The Debian Project. Retrieved December 1, 2008.
- List of free-software licences on the FSF website: “We recommend that developers consider using the GNU AGPL for any software which will commonly be run over a network”.
- "OSI approved licenses". Open Source initiative.
- "OSI approved", Licenses, TL;DR legal.
- "Licenses section 13", GNU AGPLv3, GNU Project.
- "Funambol Helps New AGPLv3 Open Source License Gain Formal OSI Approval" (press release). Funambol. Mar 13, 2008.
- The GNU General Public License – GNU Project – Free Software Foundation (FSF)
- Kuhn, Bradley M. (November 21, 2007). "stet and AGPLv3". Software Freedom Law Center. Archived from the original on March 15, 2008. Retrieved June 14, 2008.
- Ronacher, Armin (2013-07-23). "Licensing in a Post Copyright World". lucumr.pocoo.org. Retrieved 2015-11-18.
The AGPLv3 was a terrible success, especially among the startup community that found the perfect base license to make dual licensing with a commercial license feasible. MongoDB, RethinkDB, OpenERP, SugarCRM as well as WURFL all now utilize the AGPLv3 as a vehicle for dual commercial licensing. The AGPLv3 makes that generally easy to accomplish as the original copyright author has the rights to make a commercial license possible but nobody who receives the sourcecode itself through the APLv3 inherits that right. I am not sure if that was the intended use of the license, but that's at least what it's definitely being used for now.