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- The Mozilla Public License (MPL) is a free and open-source weak copyleft license for most Mozilla Foundation software such as Firefox and Thunderbird.
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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 .
- Version 2.0
1.12. “Secondary License” means either the GNU General...
- MPL 1.1
Mozilla Public License Version 1.1. 1. Definitions. 1.0.1....
- Mozilla Licensing Policies
The Mozilla Foundation Licensing & Trademarks Source Code....
- Appropriate Header Text
Mozilla License Headers This page gives copy-and-pasteable...
- Historical Documents
Mozilla Public License, version 1.1 This is the Mozilla...
- MPL 2.0 FAQ
About MPL. Q1: What is the Mozilla Public License? The MPL...
- MPL 1.1 FAQ
The FAQ for MPL 2.0 is here. This is the Mozilla MPL FAQ. It...
- Version 2.0
- Definitions.
- Source Code License.
- Distribution obligations.
- Inability to Comply Due to Statute Or Regulation.
- Application of This License.
- Versions of The License.
- Disclaimer of Warranty
- Termination
- Limitation of Liability
- U.S. Government End Users
1.0.1. "Commercial Use"
1. means distribution or otherwise making the Covered Code available to a third party.
1.1. "Contributor"
1. means each entity that creates or contributes to the creation of Modifications.
1.2. "Contributor Version"
1. means the combination of the Original Code, prior Modifications used by a Contributor, and the Modifications made by that particular Contributor.
2.1. The Initial Developer Grant.
The Initial Developer hereby grants You a world-wide, royalty-free, non-exclusive license, subject to third party intellectual property claims: 1. under intellectual property rights (other than patent or trademark) Licensable by Initial Developer to use, reproduce, modify, display, perform, sublicense and distribute the Original Code (or portions thereof) with or without Modifications, and/or as part of a Larger Work; and 2. under Patents Claims infringed by the making, using or selling of Or...
2.2. Contributor Grant.
Subject to third party intellectual property claims, each Contributor hereby grants You a world-wide, royalty-free, non-exclusive license 1. under intellectual property rights (other than patent or trademark) Licensable by Contributor, to use, reproduce, modify, display, perform, sublicense and distribute the Modifications created by such Contributor (or portions thereof) either on an unmodified basis, with other Modifications, as Covered Code and/or as part of a Larger Work; and 2. under Pat...
3.1. Application of License.
The Modifications which You create or to which You contribute are governed by the terms of this License, including without limitation Section 2.2. The Source Code version of Covered Code may be distributed only under the terms of this License or a future version of this License released under Section 6.1, and You must include a copy of this License with every copy of the Source Code You distribute. You may not offer or impose any terms on any Source Code version that alters or restricts the a...
3.2. Availability of Source Code.
Any Modification which You create or to which You contribute must be made available in Source Code form under the terms of this License either on the same media as an Executable version or via an accepted Electronic Distribution Mechanism to anyone to whom you made an Executable version available; and if made available via Electronic Distribution Mechanism, must remain available for at least twelve (12) months after the date it initially became available, or at least six (6) months after a su...
3.3. Description of Modifications.
You must cause all Covered Code to which You contribute to contain a file documenting the changes You made to create that Covered Code and the date of any change. You must include a prominent statement that the Modification is derived, directly or indirectly, from Original Code provided by the Initial Developer and including the name of the Initial Developer in (a) the Source Code, and (b) in any notice in an Executable version or related documentation in which You describe the origin or owne...
If it is impossible for You to comply with any of the terms of this License with respect to some or all of the Covered Code due to statute, judicial order, or regulation then You must: (a) comply with the terms of this License to the maximum extent possible; and (b) describe the limitations and the code they affect. Such description must be include...
This License applies to code to which the Initial Developer has attached the notice in Exhibit Aand to related Covered Code.
6.1. New Versions
Netscape Communications Corporation ("Netscape") may publish revised and/or new versions of the License from time to time. Each version will be given a distinguishing version number.
6.2. Effect of New Versions
Once Covered Code has been published under a particular version of the License, You may always continue to use it under the terms of that version. You may also choose to use such Covered Code under the terms of any subsequent version of the License published by Netscape. No one other than Netscape has the right to modify the terms applicable to Covered Code created under this License.
6.3. Derivative Works
If You create or use a modified version of this License (which you may only do in order to apply it to code which is not already Covered Code governed by this License), You must (a) rename Your license so that the phrases "Mozilla", "MOZILLAPL", "MOZPL", "Netscape", "MPL", "NPL" or any confusingly similar phrase do not appear in your license (except to note that your license differs from this License) and (b) otherwise make it clear that Your version of the license contains terms which differ...
Covered code is provided under this license on an "as is" basis, without warranty of any kind, either expressed or implied, including, without limitation, warranties that the covered code is free of defects, merchantable, fit for a particular purpose or non-infringing. The entire risk as to the quality and performance of the covered code is with yo...
8.1. This License and the rights granted hereunder will terminate automatically if You fail to comply with terms herein and fail to cure such breach within 30 days of becoming aware of the breach. All sublicenses to the Covered Code which are properly granted shall survive any termination of this License. Provisions which, by their nature, must rem...
Under no circumstances and under no legal theory, whether tort (including negligence), contract, or otherwise, shall you, the initial developer, any other contributor, or any distributor of covered code, or any supplier of any of such parties, be liable to any person for any indirect, special, incidental, or consequential damages of any character i...
The Covered Code is a "commercial item," as that term is defined in 48 C.F.R. 2.101 (Oct. 1995), consisting of "commercial computer software" and "commercial computer software documentation," as such terms are used in 48 C.F.R. 12.212 (Sept. 1995). Consistent with 48 C.F.R. 12.212 and 48 C.F.R. 227.7202-1 through 227.7202-4 (June 1995), all U.S.Gov...
Mozilla Public License 2.0 Requirements. Open source software licenses fall into two categories: permissive and copyleft. Copyleft licenses, in turn, come in two flavors: strong and weak. The Mozilla Public License 2.0 is in the latter group. The difference between the two forms of copyleft licenses lies in the scope of source code to be shared.
The Mozilla Public License (MPL) is a free and open-source weak copyleft license for most Mozilla Foundation software such as Firefox and Thunderbird.
- January 3, 2012
- Mozilla Foundation
Jan 30, 2024 · About MPL. Q1: What is the Mozilla Public License? The MPL is a simple copyleft license. The MPL's "file-level" copyleft is designed to encourage contributors to share modifications they make to your code, while still allowing them to combine your code with code under other licenses (open or proprietary) with minimal restrictions.
Mozilla Public License 2.0: Redline from MPL 1.1. Text that is red and struck through has been removed in MPL 2.0. Text that is blue and underlined has been added in MPL 2.0. Mouse over the highlighted text to get a further explanation of that change in the license. Note that these explanations are not the license.
The FAQ for MPL 2.0 is here. This is the Mozilla MPL FAQ. It aims to answer the most common questions people have about using and distributing code under the MPL. Note that because much of the Mozilla codebase is MPL/GPL/LGPL tri-licensed, it's also possible to use and distribute some Mozilla products under the LGPL or GPL; in that case, some ...
