Welcome to the Mozilla Developer Community

• Mozilla Developer Guide

  Whether you're an old hand or just getting started, this is the best way to get started with Mozilla development.

• The Mozilla Platform

  Learn more about the technologies at the core of Mozilla products and services.

• Using Mozilla code in other projects

  There are several ways you can use Mozilla code in your own project. Find everything you need to develop "powered by Mozilla" applications.

• Debugging

  Mozilla developers have come up with not just technologies and features to help you debug code, but have devised tips and techniques that can help too.

• Localization

  Localization (L10n) is the process of translating software user interfaces from one language to another and adapting it to suit a foreign culture. These resources are about making Mozilla-based applications/extensions localizable.

All applications development documentation

• Redesigning the Tab Bar, Cloudmashing and more…

  about:mozilla is a weekly round-up of news and contribution opportunities. Here’s what’s happening this week. Redesigning the Tab Bar: More Progress! More than six months ago, Jared Wein worked on the upcoming redesign of the tab bar. When Matthew Noorenberghe took over the work, only Windows users were able to ...

  Posted March 5, 2013 by Jan Bambach

• Mozilla Unlocks the Power of the Web, Firefox 19 and more…

  about:mozilla is a weekly round-up of news and contribution opportunities. Here’s what’s happening this week. Mozilla Unlocks the Power of the Web This will be one of the most exciting weeks ever! One year ago, we promised to change the way you interact with the web on the go. And ...

  Posted February 26, 2013 by Jan Bambach

• Summer of Code 2013, An Objective View on Webkit and more…

  about:mozilla is a weekly round-up of news and contribution opportunities. Here’s what’s happening this week. WebKit: An Objective View If you love reading online news websites, you’ve probably stumbled across something like this: “Oh no, Opera will move from Presto to WebKit!”. While this seems to be pretty alarming, it’s ...

  Posted February 19, 2013 by Jan Bambach

• Firefox Flicks returns, Support for MP3 & MP4 and more…

  about:mozilla is a weekly round-up of news and contribution opportunities. Here’s what’s happening this week. Firefox Flicks Returns Last year, our global video competition Firefox Flicks, which aims to tell people the Firefox story, was a huge success. More than a thousand filmmakers submitted hundreds of entries from all over ...

  Posted February 11, 2013 by Jan Bambach

• Webmaker in 2013, Devices & Dark Matter and more…

  about:mozilla is a weekly round-up of news and contribution opportunities. Here’s what’s happening this week. Devices and Dark Matter Firefox OS is the upcoming operating system for mobiles that lets you put a powerful and open world into your pocket. Lots of people have asked the project manager Dietrich Ayala ...

  Posted January 23, 2013 by Jan Bambach

All application development entries