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Historical Licensing Documents

These files are made available for historical and reference purposes only, and should not be used to license software.

Mozilla Public License, version 1.1
This is the Mozilla Public License, version 1.1. It is also available in plain text. MPL 1.1 is obsoleted by MPL 2.0, and Mozilla strongly recommends against using this license for new code.
MPL version 1.1 FAQ
This is the FAQ for MPL 1.1. Because MPL 1.1 has been replaced by MPL 2.0, this FAQ should be used for historical reference purposes only.
Netscape Public License, version 1.1
This is the Netscape Public License, in the form of Amendments to the Mozilla Public License, along with the MPL itself. It is also available in plain text. NPL 1.1 is obsolete and should not be used.
Relicensing FAQ
This gives the details of the process we used between 2001 and 2004 to change the Mozilla source code from MPL or NPL only to the MPL/GPL/LGPL tri-licence.
Annotated Netscape Public License, version 1.0, and
Annotated Mozilla Public License, version 1.0
Since legal documents are difficult for non-lawyers to read, Mozilla has in the past provided a version of the license which contains informal explanations of various sections of the license, in the form of hyperlinks. Note that these explanations are not the license. The explanations are not a legal document, or legal advice. If you need to know exactly what the license requires, you need to read and understand the license itself; if you need legal advice, you need to talk to a lawyer. The annotations are merely a good faith effort to explain the license in simpler language.
Netscape Public License, version 1.0
This is the license under which the Mozilla source code was initially released. It is also available in plain text. The NPL is obsolete and should not be used.
Mozilla Public License, version 1.0
This is the original version of the MPL. It is also available in plain text. MPL 1.0 is obsolete and should not be used.
NPL version 1.0 FAQ
This is a set of Frequently Asked Questions about NPL and MPL 1.0, and about the process by which we arrived at these licenses.