About the License
MPL 2.0 Revision Process
Various historical documents relating to the Mozilla and Netscape Public Licenses are available, including deprecated versions of the license such as MPL 1.1.
Mozilla Licensing Information
The Mozilla Project is only one of many users of the MPL, but because many people come to this page looking for information about Mozilla's open source licensing policies and practices, we've provided the information below as a reference.
Correctly Licensing New Source Code
Licenses For Existing Source Code
Most Mozilla software projects use the MPL, but some have different terms. Detailed information on the licensing of existing code can be found by inspecting its license headers, or by visiting the license information page in the relevant Mozilla software.
For information on how other things are licensed, including Mozilla's trademarks and websites, see our general licensing information page.