For other uses, see Free license (disambiguation).
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Type of license agreement
A free license or open license[1][2] is a license which allows others to reuse another creator’s work as they wish. Without a special license, these uses are normally prohibited by copyright, patent or commercial license. Most free licenses are worldwide, royalty-free, non-exclusive, and perpetual (see copyright durations). Free licenses are often the basis of crowdsourcing and crowdfunding projects.
The invention of the term "free license" and the focus on the rights of users were connected to the sharing traditions of the hacker culture of the 1970s public domain software ecosystem, the social and political free software movement (since 1980) and the open source movement (since the 1990s).[3] These rights were codified by different groups and organizations for different domains in Free Software Definition, Open Source Definition, Debian Free Software Guidelines, Definition of Free Cultural Works and The Open Definition.[1] These definitions were then transformed into licenses, using the copyright as legal mechanism. Ideas of free/open licenses have since spread into different spheres of society.
Open source, free culture (unified as free and open-source movement), anticopyright, Wikimedia Foundation projects, public domain advocacy groups and pirate parties are connected with free and open licenses.
^ abOpen Definition 2.1 on opendefinition.org "This essential meaning matches that of “open” with respect to software as in the Open Source Definition and is synonymous with “free” or “libre” as in the Free Software Definition and Definition of Free Cultural Works."
^The Open Source Definition
^Kelty, Christpher M. (2018). "The Cultural Significance of free Software - Two Bits" (PDF). Duke University press - durham and london. p. 99. Prior to 1998, Free Software referred either to the Free Software Foundation (and the watchful, micromanaging eye of Stallman) or to one of thousands of different commercial, avocational, or university-research projects, processes, licenses, and ideologies that had a variety of names: sourceware, freeware, shareware, open software, public domain software, and so on. The term Open Source, by contrast, sought to encompass them all in one movement.
A freelicense or open license is a license which allows others to reuse another creator’s work as they wish. Without a special license, these uses are...
The GNU Free Documentation License (GNU FDL or simply GFDL) is a copyleft license for free documentation, designed by the Free Software Foundation (FSF)...
explicitly declared free. This is usually accomplished by referencing or including licensing statements from within the work. A free cultural work is, according...
BSD licenses are a family of permissive free software licenses, imposing minimal restrictions on the use and distribution of covered software. This is...
The Academic FreeLicense (AFL) is a permissive free software license written in 2002 by Lawrence E. Rosen, a former general counsel of the Open Source...
The Apache License is a permissive free software license written by the Apache Software Foundation (ASF). It allows users to use the software for any...
The Free Art License (FAL) (French: Licence Art Libre, LAL) is a copyleft license that grants the right to freely copy, distribute, and transform creative...
MIT License is a permissive software license originating at the Massachusetts Institute of Technology (MIT) in the late 1980s. As a permissive license, it...
GNU Lesser General Public License (LGPL) is a free-software license published by the Free Software Foundation (FSF). The license allows developers and companies...
A license is granted by a party (licensor) to another party (licensee) as an element of an agreement between those parties. In the case of a license issued...
A permissive software license, sometimes also called BSD-like or BSD-style license, is a free-software license which instead of copyleft protections, carries...
Aladdin Free Public License, abbreviated AFPL, is a license written by L. Peter Deutsch for his Ghostscript PostScript language interpreter. The license was...
A software license is a legal instrument (usually by way of contract law, with or without printed material) governing the use or redistribution of software...
The GNU General Public License (GNU GPL or simply GPL) is a series of widely used free software licenses, or copyleft, that guarantee end users the four...
License v3 (GPLv3) The BSD License The GNU Lesser General Public License (LGPL) The Mozilla Public License (MPL) The Eclipse Public License The Free Software...
The ISC license is a permissive free software license published by the Internet Software Consortium, now called Internet Systems Consortium (ISC). It...
The FreeBSD Documentation License is the license that covers most of the documentation for the FreeBSD operating system. The license is very similar to...
patents. Copyleft software licenses are considered protective or reciprocal in contrast with permissive free software licenses, and require that information...
Thus free music is either in the public domain or licensed under a freelicense by the artist or copyright holder themselves, often as a method of promotion...
The zlib license is a permissive free software license which defines the terms under which the zlib software library can be distributed. It is also used...
Commons (CC) license is one of several public copyright licenses that enable the free distribution of an otherwise copyrighted "work". A CC license is used...
The GNU Affero General Public License (GNU AGPL) is a free, copyleft license published by the Free Software Foundation in November 2007, and based on the...
The WTFPL is a permissive free software license. As a public domain like license, the WTFPL is essentially the same as dedication to the public domain...
The Artistic License is an open-source license used for certain free and open-source software packages, most notably the standard implementation of the...
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