A copyright notice in which the rights for use, modification, and reproduction of the product are granted to any and all users.
Example Citation:
To copyleft a program, first we copyright it; then we add distribution terms, which are a legal instrument that gives everyone the rights to use, modify, and redistribute the program's code or any program derived from it but only if the distribution terms are unchanged. Thus, the code and the freedoms become legally inseparable.
Proprietary software developers use copyright to take away the users' freedom; we use copyright to guarantee their freedom. That's why we reverse the name, changing 'copyright' into 'copyleft.'
— Richard Stallman, The GNU Project:
Earliest Citation:
GNU software is freely distributed, but in a different manner from public domain and ''freeware'' software among personal computer users. While public domain software can be freely copied, freeware authors ask users to contribute a fee if they find a program useful. In contrast, GNU programs are not placed in the public domain. Instead they are distributed with a public license that Mr. Stallman calls a ''copyleft.'' This license insures that the software will stay freely copyable and not be incorporated into a for-profit program.
— John Markoff, "One Man's Fight for Free Software," The New York Times, January 11, 1989
Related Words: Categories:

New words. 2013.

Look at other dictionaries:

  • Copyleft —   [dt. sinngemäß »ohne Copyright«], Begriff, den die Free Software Foundation verwendet, um darauf hinzuweisen, dass für die von ihr verbreitete freie Software kein Copyright besteht (Public Domain). Copyleft ist praktisch eine Lizenz für die… …   Universal-Lexikon

  • Copyleft — er en betegnelse for en række Free og Open Source licenser med krav om at afledte licenser frigives under samme licens. Den mest kendte Copyleft licens er GNU General Public License fra Free Software Foundation …   Danske encyklopædi

  • Copyleft — es un término que se asocia a una clase de licencias que, aplicadas a creaciones como el software y otras obras creativas, permite respecto de dichas obras tener las libertades de uso, copia, modificación y redistribución de lo modificado y,… …   Enciclopedia Universal

  • Copyleft — The reversed c in a full circle is the copyleft symbol. It is the copyright symbol mirrored. Unlike the copyright symbol, it has no legal meaning. Copyleft is a play on the word copyright to describe the practice of using copyright law to offer… …   Wikipedia

  • Copyleft — Una letra C invertida, símbolo sin reconocimiento legal, es el más común como contrapartida del símbolo copyright. El copyleft es una práctica al ejercer el derecho de autor que consiste en permitir la libre distribución de copias y versiones… …   Wikipedia Español

  • Copyleft —  Ne doit pas être confondu avec Logiciel libre. Le C « inversé » est le symbole du copyleft. En 2009, il n est pas reconnu comme symbole légal. L « opposé » est le symbole copyright …   Wikipédia en Français

  • Copyleft — Das Copyleft Logo. Es ist ein an der Vertikalen gespiegeltes Copyrightzeichen (©), eines also, das nach links statt nach rechts geöffnet ist. Das Copyleft ist eine Klausel in urheberrechtlichen Nutzungslizenzen, die festschreibt, dass… …   Deutsch Wikipedia

  • copyleft — 1. adjective Allowing use, distribution, and modification on the condition that any redistributions or modifications also be licensed under the same condition and, in the case of computer software, are accompanied by source code The GNU General… …   Wiktionary

  • copyleft — {{#}}{{LM C45948}}{{〓}} {{[}}copyleft{{]}} {{■}}(ing.){{□}} {{《}}▍ s.m.{{》}} Licencia que permite la difusión libre y gratuita de cualquier material. {{★}}{{\}}PRONUNCIACIÓN:{{/}} [kopiléf]. {{★}}{{\}}ORTOGRAFÍA:{{/}} Por ser un extranjerismo… …   Diccionario de uso del español actual con sinónimos y antónimos

  • Copyleft — …   Википедия

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