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Mozilla Public License




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The Mozilla Public License (MPL) is a free and open source software license developed and maintained by the Mozilla Foundation.[1] 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.[2] 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).

It has undergone two revisions,[3] a minor update to version 1.1, and a major update to version 2.0 with the goals of greater simplicity and better compatibility with other licenses.[4]

The MPL is the license for Mozilla Firefox, Mozilla Thunderbird, and most other Mozilla software,[5] but it has been used by others, such as Adobe to license their Flex product line,[6] and The Document Foundation to license LibreOffice 4.0 (also on LGPL 3+).[7][8] Version 1.1 was adapted by several projects to form derivative licenses like Sun Microsystems' own Common Development and Distribution License.[9]

The MPL license was approved as an Open Source software license by the Open Source Initiative also as a Free Software license by the Free Software Foundation.

Version 1.0 was created by Mitchell Baker when she was working as a lawyer at Netscape Communications Corporation and version 1.1 when she was working at the Mozilla Foundation.[10]

Related pages

References

  1. "Open Source Software: a legal guide | LawGives". https://www.lawgives.com/guide/55ce85817777775593000144/Open-Source-Software-a-legal-guide. Retrieved 2015-09-08. 
  2. Andrew Laurent (2004). Understanding Open Source and Free Software Licensing. "O'Reilly Media, Inc.". p. 62. ISBN 978-0-596-00581-8 . https://books.google.com/books?id=XhXQZgn_QxAC&pg=PT73&lpg=PT73&focus=viewport&vq=%22Netscape+Communications+decided+to+release%22&dq=9780596005818#v=onepage&q=%22Netscape%20Communications%20decided%20to%20release%22&f=false. 
  3. "Historical Licensing Documents". Mozilla Foundation. https://www.mozilla.org/MPL/historical.html. Retrieved 29 February 2012. 
  4. "About MPL 2.0: Revision Process and Changes FAQ". Mozilla Foundation. https://www.mozilla.org/MPL/2.0/Revision-FAQ.html. Retrieved 29 February 2012. 
  5. "Mozilla Foundation License Policy". Mozilla Foundation. https://www.mozilla.org/MPL/license-policy.html. Retrieved 29 February 2012. 
  6. "Adobe Flex FAQ: Licensing". Adobe Systems. http://www.adobe.com/products/flex/faq.html#licensing. Retrieved 29 February 2012. 
  7. "The meaning of the 4.0". 24 January 2013. http://standardsandfreedom.net/index.php/2013/01/24/the-meaning-of-the-4-0/. 
  8. "Licenses - LibreOffice - Free Office Suite - Fun Project - Fantastic People". https://www.libreoffice.org/download/license/. 
  9. Fontana, Richard (9 January 2012). "The new MPL". http://opensource.com/law/12/1/the-new-mpl. Retrieved 1 March 2012. 
  10. The Time 100: Mitchell Baker: The "Lizard Wrangler" (Marc Andreessen, Time, 18 April 2005)