What is Open license?
[[File:CC-logo.svg|thumb|[[Creative Commons licenses]] are one of the most popular open licenses.]] An '''open license or free license''' is a [[license]] that allows others to re-use an author's work as they wish. Without such a license, such use is generally prohibited by [[copyright]] law or a [[closed license]]. == Licenses == === By type of license === * [[Public domain]] licenses ** [[CC0|Creative Commons CC0]] ** [[WTFPL]] ** [[Unlicense]] ** Public Domain Dedication and License (PDDL)<ref>[http://opendatacommons.org/licenses/pddl/1-0/ PDDL 1.0] on opendatacommons.org</ref> * [[Permissive license]]s ** [[BSD License]] ** [[MIT License]] ** [[Mozilla Public License]] (file-based permissive copyleft) ** [[Creative Commons Attribution]] * [[Copyleft]] & [[patentleft]] licenses ** [[GNU GPL]], [[GNU LGPL|LGPL]] (weaker copyleft), [[GNU AGPL|AGPL]] (stronger copyleft) ** [[Creative Commons Attribution Share-Alike]] ** [[Mozilla Public License]] ** [[Common Development and Distribution License]] ** [[GFDL]] (without invariant sections) ** [[Free Art License]] === By type of content === * [[Open-source software]] ** [[The Open Source Definition]] * [[Open Content]] ** [[Open Content License]] ** [[Open Publication License]] * [[Open-source hardware]] * [[Database|Open database]] ** [[Creative Commons]] v4 ** [[Open Database Licence]] === By authors === * [[Creative Commons]] * [[Free Software Foundation]] * [[Open Source Initiative]] * [[Microsoft]] ** [[Microsoft Public License]] ** [[Microsoft Reciprocal License]] * [[Open Content Project]] * [[Open Data Commons]] from [[Open Knowledge Foundation]] ** [[Public Domain Dedication and License]] (PDDL) ** [[Attribution License]] (ODC-By) ** [[Open Database License]] (ODC-ODbL) *[[European Union]] **[[European Union Public Licence]] == Related pages == * [[Open content]] * [[Openness]] ==References== {{Reflist}} [[Category:Licenses]]