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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,
 
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.
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### Offsite Resources
 

	
 
#### What Is Copyleft?
 
#### More on: "What Is Copyleft?"
 

	
 
Here are a few sources to read generally what copyleft is:
 

	
 
  * [Richard M. Stallman's essay on copyleft at gnu.org](https://www.gnu.org/copyleft/)
 
  * [The Wikipedia entry on Copyleft](http://en.wikipedia.org/wiki/Copyleft)
 
    (The definition of copyleft at the top of this page is modified version
 
    of the first paragraph of that Wikipedia entry).