copyleft.org
============
## What is Copyleft?
Copyleft is a strategy of utilizing copyright law to pursue the policy goal
of fostering, encouraging the equal and inalienable right to copy, share,
of fostering and encouraging the equal and inalienable right to copy, share,
modify and improve creative works of authorship. Copyleft (as a general
term) describes any method that utilizes the copyright system to achieve the
aforementioned goal. Copyleft as a concept is usually implemented in the
details of a specific copyright license, such as the GNU
[General Public License](http://www.gnu.org/copyleft/gpl.html) and the
[Creative Commons Attribution Share Alike License](http://creativecommons.org/licenses/by-sa/4.0/).
Copyright holders of creative work can choose and implement these licenses
for their own works unilaterally to build communities that share those
creative works.
## What is copyleft.org?
copyleft.org is a collaborative project to create and disseminate useful
information, tutorial material, and new policy ideas regarding all forms of
copyleft licensing.
### The Copyleft Guide and Tutorial
The primary project currently on this site is a tutorial book entitled
[*Copyleft and the GNU General Public License: A Comprehensive Guide and Tutorial*](/guide/).
This guide describes the policy motivations for copyleft, presents a detailed analysis of the text of
various copyleft licenses, and gives examples and case studies of copyleft compliance situations.
### Getting Involved