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Bradley Kuhn (bkuhn) - 6 months ago 2022-06-02 18:02:38
bkuhn@ebb.org
Various improvements to the front page of copyleft.org
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Let's start with a simplified copyleft definition, based on the one found on Wikipedia:
 
## What is copyleft?
 

	
 
What is copyleft?
 
Copyleft is a strategy of utilizing copyright law and licensing to pursue the policy goal 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 (in whole or in part) to achieve the aforementioned goal.  Copyleft as a concept is usually implemented in the details of a specific license, such as the [General Public License (GPL)](http://www.gnu.org/copyleft/gpl.html) and [copyleft-next](http://copyleft-next.org/). Authors of creative works can unilaterally choose these licenses for their own works to build communities that collaboratively share and improve those copylefted creative works.  Copyleft licenses require that downstream recipients of the creative works receive the means and methods to usefully modify and improve those works of authorship.  For software copyleft licenses, users receive the “complete, corresponding source” code for the software — allowing those users to conveniently modify and reinstall that software.
 

	
 
Copyleft is a strategy of utilizing copyright law to pursue the policy goal 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 (GPL)](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 works can unilaterally choose these licenses for their own works to build communities that collaboratively share and improve those copylefted creative works.
 
## What is copyleft.org?
 

	
 
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. This site itself is licensed under a free and open license and has received contributions from experts around the world.
 

	
 
copyleft.org is a collaborative project to create and disseminate useful information, tutorial material, and new policy ideas regarding all forms of copyleft licensing. This site itself is licensed under a copyleft license and has received contributions from experts around the world. Thus, copyleft.org is the premier "meta-project" of copyleft: it's useful copylefted information all about copyleft itself!
 

	
 
The Copyleft Guide and Tutorial
 
## 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 Tutorial and 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.
 

	
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@@ -22,16 +20,11 @@ Joining Mailing Lists
 
   * Subscribe to our low-traffic [announcements-only mailing list](https://lists.copyleft.org/cgi-bin/mailman/listinfo/announce).
 
   * Join discussion on our [primary mailing list, called "discuss"](https://lists.copyleft.org/cgi-bin/mailman/listinfo/discuss).
 

	
 
IRC Discussion
 

	
 
The copyleft.org IRC channel is #copyleft on irc.freenode.net(irc://irc.freenode.net/#copyleft).
 
The IRC logs are public here on this site(/irclogs/).
 

	
 
Who Contributes to copyleft.org?
 
## Who Contributes to copyleft.org?
 

	
 
This site is a joint project of [Software Freedom Conservancy](https://sfconservancy.org/news/2014/nov/07/copyleft-org/) and the [Free Software Foundation](http://www.fsf.org/news/software-freedom-conservancy-and-free-software-foundation-announce-copyleft.org).  The editor-in-chief of the guide is Bradley M. Kuhn (http://ebb.org/bkuhn).  The recent changes page (/recentchanges) shows who has contributed to the wiki, and you can see the Git commit log on the tutorial (https://k.copyleft.org/guide/changelog)to see who has contributed to it, and see the list of users who contribute to this Wiki. copyleft.org may be sponsored by various organizations, and organizations may also republish some, or all, of the output of this project under the terms of the CC BY-SA license.  However, contributors' work is their own, and thus the opinions expressed in their contributions, IRC utterances, commit messages mailing list posts, and/or other fora provided by copyleft.org may not necessarily reflect the views of the contributors' employers and/or organizations sponsoring the project and/or organizations republishing copyleft.org's materials.  Generally speaking, unless stated otherwise, please assume that individuals contribute to copyleft.org in their personal capacity.
 
This site is a project of [Software Freedom Conservancy](https://sfconservancy.org/news/2014/nov/07/copyleft-org/).  The editor-in-chief of the guide is [Bradley M. Kuhn](http://ebb.org/bkuhn).  You can see the Git [commit log on the tutorial](https://k.copyleft.org/guide/changelog) to see who has contributed to it, and see the list of users who contribute to this Wiki. Each contributors' work is their own, and thus the opinions expressed in their contributions, IRC utterances, commit messages mailing list posts, and/or other fora provided by copyleft.org may not necessarily reflect the views of the contributors' employers and/or organizations sponsoring the project and/or organizations republishing copyleft.org's materials.  Generally speaking, unless stated otherwise, please assume that individuals contribute to copyleft.org in their personal capacity.
 

	
 
URLs You Can Memorize!
 
## URLs You Can Memorize!
 

	
 
copyleft.org has many easy-to-remember URLs.  These are convenience URLs that you can memorize and give to people verbally to point them to the right part of The Guide (https://copyleft.org/guide/).  (Since the guide is very large, we thought a few easy-to-remember ways to tell people where to look would be helpful.)  Here are the primary ones:
 

	
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@@ -44,12 +37,6 @@ As time goes on, we'll add convenience URLs to refer to specific parts of the gu
 
  * [compliance.guide/pristine](http://compliance.guide/pristine) points to the "pristine example", the chapter entitled *ThinkPenguin Wireless Router: Excellent CCS*.
 
  * [compliance.guide/offer-for-source](http://compliance.guide/offer-for-source) points to the section regarding using the offer for source provisions in GPLv3§6(c) and/or GPLv2§3(b).
 

	
 
Offsite Resources
 

	
 
More on "What Is copyleft?" 
 

	
 
Here are a few external resources to read regarding the general concept of copyleft:
 
  * [Princeton T. Taylor 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 a modified version of the first paragraph of that Wikipedia entry).
 
## Offsite Resources
 

	
 
Copyleft!
 
[The Wikipedia entry on copyleft](http://en.wikipedia.org/wiki/copyleft) (The definition of copyleft at the top of this page is a modified version of the first paragraph of that Wikipedia entry).
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