About the License

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.

MPL 2.0 Revision Process

The release of MPL 2.0 was the result of a two year process that revised MPL 1.1. A Revision FAQ documents this process, and explains the most significant changes made.

Historical Documents

Various historical documents relating to the Mozilla and Netscape Public Licenses are available, including deprecated versions of the license such as MPL 1.1.