Firefox OS is a new mobile operating system developed by Mozilla's Boot to Gecko (B2G) project. It uses a Linux kernel and boots into a Gecko-based runtime engine, which lets users run applications developed entirely using HTML, JavaScript, and other open web application APIs.

Firefox OS is currently under heavy development; we are constantly working on ways to make it easier for you to use and hack on Gaia and create apps. However, you need knowledge about systems in order to do things like build the entire Firefox OS stack, or flash a phone with a build of Firefox OS. Linked below are guides meant for Web developers interested in running and making changes to Gaia or developing apps to run on Firefox OS devices.

Documentation about Firefox OS

Introduction to Firefox OS
Introductory information about what Firefox OS is and how it works.
Writing apps for Firefox OS
A tutorial guide to developing applications to run on Firefox OS devices.
Building and installing Firefox OS
A guide to building Firefox OS and installing it on your compatible device. This guide also covers building the Firefox OS emulator, for running Firefox OS on a computer.
Documentation about Gaia, the user interface application for Firefox OS devices; this is a Web application running atop the Firefox OS software stack.
Documentation about Gonk, the operating system layer underneath Gaia. This consists of a Linux kernel and a hardware abstraction layer to which Gecko communicates.
Gecko is the layer of Firefox OS that provides the same open web standards implementation used by Firefox and Thunderbird, as well as many other applications.
Documentation about security in Firefox OS; this includes topics about security devices from every perspective: for app developers, device integrators, and so forth.
Articles about optimizing Firefox OS applications.
Firefox OS architecture overview
An overview of how Firefox OS is structured.
A guide to resolving common problems with Firefox OS.
Testing Firefox OS
A guide to testing Firefox OS, including information about creating automated tests.
Debugging on Firefox OS
A guide to debugging both your mobile apps and Firefox OS itself.
Firefox OS developer phone guide
A guide to the Firefox OS developer phones Mozilla provides to some developers. This guide also applies if someone installed Firefox OS on your phone for you.
Porting Firefox OS
Information about how to port Firefox OS to new devices.
Customization with the .userconfig file
How to customize the build and execution of Firefox OS by changing the .userconfig file.

View All...

Getting help from the community

If you're working with Firefox OS, or developing applications you'd like to run on Firefox OS devices, there are community resources to help you!

  • Ask your question on Mozilla's Boot to Gecko IRC channel: #b2g

Don't forget about the netiquette...