Read about how to install Firefox OS and how to develop apps for it.
Firefox for Android is Mozilla's mobile web browser for Android devices. It's recently been rewritten to use Android's native UI, making it faster, leaner and more responsive. It provides support for powerful APIs to access device capabilities such as the camera and telephony stack.
Read about how to help create Firefox for Android, how to use its device APIs, and how to build mobile add-ons.
Firefox for iOS is Mozilla's upcoming mobile web browser for iOS devices. Because of AppStore restrictions, it uses the built in WebView supplied by iOS rather than Gecko.
Read about how to help with Firefox for iOS, and how to integrate it with your other iOS Apps.
Mobile devices have very different hardware characteristics from desktop or laptop computers, and many of the APIs used to work with them are still in the process of being standardized.
Read about how to develop web sites that look good on mobile devices and take advantage of the new possibilities they offer. Learn how to make sure your web site works well on different browsers.