How is the Affero General Public License (“AGPL”) different from the GNU General Public License (“GPL”)?
The AGPL license is identical to the GPL except for one additional section, 2(d), that covers the interaction with application programs through web services or computer networks. Section 2(d) reads as follows: “If the Program as you received it is intended to interact with users through a computer network and if, in the version you received, any user interacting with the Program was given the opportunity to request transmission to that user of the Program’s complete source code, you must not remove that facility from your modified version of the Program or work based on the Program, and must offer an equivalent opportunity for all users interacting with your Program through a computer network to request immediate transmission by HTTP of the complete source code of your modified version or other derivative work.” For more information about the AGPL see the AGPL Frequently Asked Questions located at http://www.affero.org/oagf.html.
