Develop HTML5 Web Apps for an open marketplace.


Learn how to design apps that provide a user experience optimized for Firefox OS & Mobile


All the tools, docs and references you'll need for development and testing of your app


Find out how to distribute your apps on an open marketplace that puts users and developers first

Do you have an app ready for liftoff?

Submit your app to the Marketplace

Join the community

Look who's already here

Are you a Web Company, Third-Party Service, or OEM looking to partner with Mozilla? Check out our Partners page for more info.

The Mozilla apps platform

Building apps for the Web provides developers with full control over content, functionality and how apps are distributed, including access to hundreds of millions of Firefox users through the Firefox Marketplace.

Using open Web standards and Mozilla-designed APIs, great app experiences can be delivered across multiple platforms, devices and operating systems — closing the gap between Web and native apps for the first time.

Firefox Marketplace

The Firefox Marketplace gives users the opportunity to find, try and buy apps and content that matters most to them. This means exciting, useful and high-quality Apps relevant to local markets across all categories that users can use to get the most out of their daily lives.

Mozilla's global reach extends to hundreds of millions of Firefox users worldwide. Through intelligent Marketplace curation and effective use of Mozilla’s marketing channels, Mozilla can help developers can get their app into the hands of their target users around the world.

The Firefox Marketplace is now open and accepting apps. Submit your app to:

  • Test your app with a committed group of early adopters.
  • Build an early fan base and gain popularity.
  • Target tech savvy consumers with your app.

Firefox Apps & Hacks

Sign up for our monthly newsletter about Firefox OS, Marketplace and the apps ecosystem. Check out the developer phone preview

Developer Devices

Code & Tools

Events & Meetups

I'm okay with Mozilla handling this information as explained in the Privacy Policy.