Software license created by the Free Software Foundation. It permits the free and uninhibited distribution of the source code for programs falling under that license. The Linux kernel is an example of software that uses the GNU GPL.

is a license created by the Free Software Foundation. The purpose of the GPL is to grant any user the right to copy, modify and redistribute programs and source code from developers that have chosen to license their work under the GPL.

The GNU GPL is a revolutionary license for software which guarantees the following freedoms: (Freedom 0) The freedom to run the program, for any purpose. (Freedom 1) The freedom to study how the program works, and adapt it to your needs. Access to the source code is a precondition for this. (Freedom 2) The freedom to redistribute copies so you can help your neighbour. (Freedom 3) Freedom to improve the program, and release your improvements to the public, so that the whole community benefits. Access to the source code is a precondition for this. From the Free Software Foundation: http://www.fsf.org