What does copyleft mean?
Copyleft is a license or contract that allows users to freely copy, modify, and distribute a work, while requiring that any modified or extended versions be distributed under the same license. This approach is often used in open-source software development and creative works, such as music and art. By using a copyleft license, creators can promote collaboration and sharing, while also ensuring that their rights are respected. Copyleft licenses can be used to create a community-driven approach to development and distribution, where users are encouraged to contribute and share their own modifications and extensions. This approach has been widely adopted in the software and creative industries, and has helped to promote innovation and collaboration.
nounA license or contract that allows users to freely copy, modify, and distribute a work, while requiring that any modified or extended versions be distributed under the same license.
- A license or contract that allows users to freely copy, modify, and distribute a work, while requiring that any modified or extended versions be distributed under the same license.
"The software was released under a copyleft license, ensuring that any modifications would also be freely available."
"The software was released under a copyleft license, ensuring that any modifications would also be freely available."
"The artist used a copyleft license for her music, allowing fans to remix and share their own versions."
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of copyleft
The term 'copyleft' was coined in the 1980s by Richard Stallman, a pioneer of the free software movement. It is derived from the concept of copyright, but with a twist: instead of restricting the use of a work, copyleft licenses allow users to freely copy, modify, and distribute the work. The term is a play on the word 'copyright,' and is meant to convey the idea of a license that is the opposite of a traditional copyright.
How copyleft is actually used
Copyleft licenses are often used in open-source software development and creative works, such as music and art. They can be used to promote collaboration and sharing, while also ensuring that the original creator's rights are respected.