Develop HTML5 Web Apps for an open marketplace.


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


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

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 millions of Firefox OS users through the Firefox Marketplace.

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.