When was copyleft started?
Copyleft is a term that first appeared in the Tiny BASIC program written by Dr. Li-Chen Wang in 1976. Widely considered the first freeware, the programs distribution included copyleft and all wrongs reserved as part of the licensing text, an obvious statement of opposition to copyright.
Which licenses are copyleft?
Notable copyleft licenses include the GNU General Public License (GPL), originally written by Richard Stallman, which was the first software copyleft license to see extensive use, the Mozilla Public License, the Free Art License, and the Creative Commons share-alike license condition, with the last two being intended
Which licenses are copyleft?
Notable copyleft licenses include the GNU General Public License (GPL), originally written by Richard Stallman, which was the first software copyleft license to see extensive use, the Mozilla Public License, the Free Art License, and the Creative Commons share-alike license condition, with the last two being intended
Are all open source licenses copyleft?
Copyleft is a subset of open source. Contrary to what the term might imply, copyleft is not the opposite of copyright. In fact, copyleft is grounded in the concept of copyright, without which copyleft couldnt exist.
What is another name of copyleft?
For questions about the copyleft concept (also known as Share-Alike), a concept that promotes or enforces the use of the same or compatible license for derived works.
What is copyleft simple?
Copyleft is the idea and the specific stipulation when distributing software that the user will be able to copy it freely, examine and modify the source code, and redistribute the software to others (free or priced) as long as the redistributed software is also passed along with the copyleft stipulation.
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).
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).
Is GPL is a strong copyleft license?
Copyleft licenses come in two flavors: strong and weak. This distinction turns on how much new or adjacent code is subject to the copyleft license. Under a strong copyleft license like GPL, if you redistribute a program that includes GPL code written by others, you must make your entire program available under GPL.
Is GNU General Public License copyleft?
Among todays more popular OSS licenses is the GNU (of the GNU Project) General Public License Version 2.0, commonly referred to as simply GPL v2. Initially released in 1991, the GPL 2 is a copyleft license, meaning users must abide by some strict rules and requirements.