"Copyleft is a general method for making a program or other work free, and requiring all modified and extended versions of the program to be free as well. The simplest way to make a program free software is to put it in the public domain, uncopyrighted. This allows people to share the program and their improvements, if they are so minded.

"The Free Software Foundation has published the GNU Affero General Public License version 3 (GNU AGPLv3). This is a new license; it is based on version 3 of the GNU General Public License (GNU GPLv3), but has an additional term to allow users who interact with the licensed software over a network to receive the source for that program. By publishing this license, the FSF aims to foster user and development communities around network-oriented free software..."

"BOSTON, Massachusetts, USA—Monday, November 19, 2007—The Free Software Foundation (FSF) today published the GNU Affero General Public License version 3 (GNU AGPLv3).

"The GNU Affero General Public License or GNU AGPL is a free software license published by the Free Software Foundation. The GNU AGPL is similar to the GNU General Public License, except that it has an additional section to cover use over a computer network. It closes what is commonly known as the Application service provider loophole of the GNU General Public License.

Why does the GNU General Public License have to be the definitive license for Free and Open Source Software? Consider the BSD license type -- a more business-friendly variety that allows for businesses to make a profit while preserving the public interest, writes columnist Jeremiah T.

After 18 months of widespread consultation with community and corporate interests, the third versions of the GNU General Public License (GPL) and GNU Lesser General Public License (LGPL) were released one year ago on 29 June 2007. In November, they were joined by the GNU Affero General Public License (AGPL).

If you ever plan on writing an open source program, then you must make an important decision, selecting a program license. Generally for open source programs, there are two main licenses that most developers take into consideration. These licenses are the Gnu General Public License, and the BSD license.

"The GNU Affero General Public License is a free, copyleft license for software and other kinds of works, specifically designed to ensure cooperation with the community in the case of network server software...

"The GNU Affero General Public License is a free, copyleft license for software and other kinds of works, specifically designed to ensure cooperation with the community in the case of network server software..."