Four Freedoms 🇳🇱🇺🇸 work in progress

About Copyleft

What is Copyleft?

Fair use:

      Anyone is free to establish a link to the English version about Copyleft by Priscilla F. Harmanus using URL http://iCopyleft.org/en/about/copyleftFor the link to the Dutch Version about Copyleft by Priscilla F. Harmanus using URL http://iCopyleft.org/nl/about/copyleft.


  1. The statements, views and opinions presented in this chapter and the web site as a whole are those of the author and are not endorsed by, nor do they necessarily reflect, the opinions of the author present and former employers, or any other organization the author may be associated with.

References and Notes / Source / Related

  • Licenses - GNU Project - Free Software Foundation https://www.gnu.org/licenses/licenses.html.en
  • https://www.gnu.org/licenses/copyleft.html
  • https://www.gnu.org/philosophy/categories.html#PublicDomainSoftware
  • https://www.gnu.org/philosophy/categories.html#ProprietarySoftware
  • https://www.gnu.org/gnu/thegnuproject.html
  • https://www.gnu.org/philosophy/pragmatic.html
  • https://www.gnu.org/software/software.html#develop
  • https://www.gnu.org/philosophy/free-sw.html
  • What is copyleft? | Opensource.com https://opensource.com/resources/what-is-copyleft