With its online chat feature, Mozilla works to break down the walls around services like Microsoft Skype and Google Hangouts.
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.
In Windows 10, Microsoft's browsers -- both IE and Spartan -- will get the tech Firefox uses to speed up Web-based games. And that's a challenge to Windows itself.
Johnathan Nightingale, Mozilla's vice president of Firefox, is leaving. Firefox is stronger now after a tough 2014, he says, but his departure means more unsettled times for the browser maker.
A partnership advances Adobe's technology ideas while making Microsoft's Project Spartan more competitive. For the rest of us, expect a more graphically rich Web.
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.
Windows 10 gets a new default Web browser, Microsoft shows off more details of the HoloLens, and the Secret app shuts down.
Windows 10 gets a new default Web browser, Microsoft shows off more HoloLens details and the Secret app shuts down.
The newest competitor to Internet Explorer comes from Microsoft itself. Project Spartan is the company's take on browsing in Windows 10.
Joe Belfiore, Microsoft's corporate VP of the operating systems group, took to the Build 2015 stage to go over new Windows 10 features.