Mozilla Public License
The Mozilla Public License (MPL) is a free and open source software license developed and maintained by the Mozilla Foundation. It is a weak copyleft, characterized as a middle ground between permissive free software licenses and the GNU General Public License (GPL), that seeks to balance the concerns of proprietary and open source developers. As such, it allows re-licensing. MPL software can thus be converted into a copyleft license such as the GPL, or to a proprietary license (example:KaiOS).
The MPL is the license for Mozilla Firefox, Mozilla Thunderbird, and most other Mozilla software, but it has been used by others, such as Adobe to license their Flex product line, and The Document Foundation to license LibreOffice 4.0 (also on LGPL 3+). Version 1.1 was adapted by several projects to form derivative licenses like Sun Microsystems' own Common Development and Distribution License.
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- "Historical Licensing Documents". Mozilla Foundation. Retrieved 29 February 2012.
- "About MPL 2.0: Revision Process and Changes FAQ". Mozilla Foundation. Retrieved 29 February 2012.
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- "Adobe Flex FAQ: Licensing". Adobe Systems. Retrieved 29 February 2012.
- "The meaning of the 4.0". 24 January 2013.
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- Fontana, Richard (9 January 2012). "The new MPL". Retrieved 1 March 2012.
- The Time 100: Mitchell Baker: The "Lizard Wrangler" (Marc Andreessen, Time, 18 April 2005)