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Jan 30, 2024 · If you see any errors in this FAQ, or have suggestions for further questions, please email licensing@mozilla.org. The MPL version 1.1 FAQ is still available here but should not be used except as a reference for that license. Last updated on January 30th, 2024. About MPL Q1: What is the Mozilla Public License? The MPL is a simple copyleft ...
Mozilla is the custodian of the Mozilla Public License ("MPL"), an open source / free software license. The current version of the license is MPL 2.0 ( html | plain text ). If you want to use or distribute code licensed under the MPL 2.0 and have questions about it, you may want to read the FAQ.
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What is the Mozilla Public License?
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What happened to MPL 2.0?
Often termed a “weak copyleft” license, MPL 2.0 falls somewhere in the middle. So, what makes Mozilla Public License 2.0 distinctive, and why might an OSS user or author like the MPL 2.0? We’ll address these questions and more below. Mozilla Public License 2.0 Requirements
Yes, you can, because MPL 1.1 allows anyone who received code under the terms of MPL 1.1 to distribute under the terms of a later version of the MPL. To do this, replace the old license header with the new header from MPL 2.0 Exhibit A.
In principle, this is incompatible with the MPL license, but the MPL-2.0 license has a special exception for allowing the code to be distributed under the terms of the GPL licenses. However, an author can also choose to explicitly disable that exception.
Both versions 1.0 and 1.1 are incompatible with the GPL, which led the Free Software Foundation to discourage using version 1.1. For these reasons, earlier versions of Firefox were released under multiple licenses: the MPL 1.1, GPL 2.0, and LGPL 2.1. [26]
On 3rd January 2012, version 2 of the Mozilla Public License (MPL) was approved by the Open Source Initiative. It is also considered to be a Free Software licence by the Free Software Foundation. Like its predecessor, the Mozilla Public License v 1.1, it seeks to impose a moderate level of ‘copyleft’ restriction on adaptations of code that ...
