Microsoft's browser was the dominant force in 2009 when the EU required the company to offer consumers a choice of browsers. But that has changed dramatically over the past several years.
With its online chat feature, Mozilla works to break down the walls around services like Microsoft Skype and Google Hangouts.
The world's largest social network has stopped showing results from the search engine.
In a major reversal, Firefox's leader tells Mozilla community members he wants the open-source browser on Apple's mobile devices. A better mobile presence is key for Firefox's future.
Mozilla takes the wrapping paper off a project that could one day make Web developer's lives much easier by allowing them to build once and test everywhere.
A subdued address bar and revamped new-tab page gives the browser a clean look that the Russian company says is better suited to Web apps. Yandex plans a mobile-device version later.
Mozilla says the new Firefox ad initiative takes a kinder, gentler approach to pitching you products.
Firefox got its first boost when Web programmers flocked to it a decade ago. Now Mozilla is trying that strategy afresh with a coder-focused version of the browser.
Data from web tracker Net Applications shows that Chrome has just overtaken Firefox on the desktop, but IE is still the big dog.
On the latest Mac OS, Apple's browser vaults past Firefox and Chrome on some tests. The browser performance race means a more sophisticated Web for us all.