Software licensing

Source Code

The Pale Moon browser is open source and free software. This means that it is not only available for download free of charge, but you have access to the source code and may modify and redistribute our software subject to certain restrictions. Our source code is for the most part covered by the Mozilla Public License v2.0.

For more details, please read about our source code license. To get a complete overview of which part of this software is covered by which free software license, type about:license in the address bar.


Although our code is free, it is very important to note that we strictly enforce our trademark (™) rights, in order to be able to protect our users against people who use the marks to commit fraud. Our trademarks include, among others, the names Pale Moon™ and "Your browser, Your way"™, as well as the Pale Moon™ logo, Goanna™ logo and project names. This means that, while you have considerable freedom to redistribute and modify the software, there are tight restrictions on your ability to use the Pale Moon names and logos in ways which fall in the domain of trademark law, even when included in the source tree and built into binaries that we provide for distribution.

In addition, we do use some of Mozilla's trademarks in our communication, like Mozilla's trademarks of Firefox® and XUL™. We honor and respect these trademarks to belong to their respective owners and use them to refer to specific products and technologies incorporated in, or in relation to, our work (nominative use).

For more detail on our trademark licensing, see our Branding Policy and Redistribution License. If you still have questions after reading the policy, please contact

Website Content

Pale Moon website content (i.e. text and pictures, not look and feel) is generally licensed under Creative Commons Attribution Share-Alike (CC-BY-SA) licenses. Specifically excluded from this are the commissioned full-detail artwork used in headers and any derivative thereof which are copyright-protected. User-generated content, such as comments on our blog posts or forum, are also generally made available under CC-BY-SA.

Website Code

You may use the HTML and CSS files on or other Moonchild Productions websites for your web site - as long as you don't use the visual design or style (the colors, gradients, fonts, artwork, etc.). In other words, you can use the HTML and/or CSS code, but your page should not look like you took Pale Moon's page and dropped in your logo. This does not grant you any right to use the trademarks, trade names, service marks, or house style of Moonchild Productions, Pale Moon or other products.

Executable Software

Executable software binaries of core products released by Moonchild Productions, such as Pale Moon, are made available under the terms of the binary redistribution license. This license also outlines the situation where binaries are built from source with official branding.

It should be noted that Basilisk does not come with the freedoms associated with the binary distribution license (as for allowance to distribute officially-branded binaries not built by us), and any redistribution of built-from-source binaries may not carry official branding, regardless of operating system.

Helper applications and tools may be made available under different licenses like the Pale Moon Freeware License or MIT licenses -- please see the applicable page of the tools or utilities in question to see which license(s) apply.
On some proprietary, non-free platforms, necessary binary components (such as runtime libraries) subject to other licenses may be included in the installer or packaged with the application.

Informative, Not Authoritative

This page is designed to inform, not to be the final, authoritative reference. If you're looking to reuse or redistribute something we have created, always check the licensing in the object of interest itself (for example, in the footer of a web page, or in the "About" box of software) after you've looked at this document.

In case of a conflict between this document and other documents (for example, if this document and the header file of a particular source code file conflict) the other document should take precedence. If you do discover such a conflict, please notify so we can fix it.


If, after reading all the above carefully, you have a further question about the licensing terms of anything created by Moonchild Productions or the Pale Moon project, please send the question to

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Pale Moon is subject to the following licensing.
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