What Is Copyleft Code?
Copyleft is a general method for making a program (or other work) free (in the sense of freedom, not “zero price”), and requiring all modified and extended versions of the program to be free as well. ... So instead of putting GNU software in the public domain, we “copyleft” it.
Is copyleft only for software?
The GNU GPL states that it “applies to any program or other work which contains a notice placed by the copyright holder saying it may be distributed under the terms of this General Public License,” so this “Program,” then, may not necessarily be a computer software program—any work of any nature that can be copyrighted ...
Applying Copyleft To Non-Software Information - GNU Project
Copyleft is the practice of granting the right to freely distribute and modify intellectual property with the requirement that the same rights be preserved in derivative works created from that property.
Copyleft - Wikipedia
What is an example of copyleft?
Copyleft is a term, usually referring to a license, used to indicate that such license requires that redistribution of said work is subject to the same license as the original. Examples of copyleft licenses are the GNU GPL (for software) and the Creative Commons SA (Share Alike) licenses (for works of art).
Copyleft - MDN Web Docs Glossary: Definitions of Web-related terms
What is copyleft in open source software?
What is an Open Source Copyleft License? According to the GNU, the founding fathers of the copyleft open source license, copyleft is a method for making a software program free, while requiring that all modified and extended versions of the program also be free, and released under the same terms and conditions.
Open Source Copyleft Licenses: All You Need to Know