The simulator is an extension that runs in Firefox and lets users check out how the operating system will work. CNET contributor Don Reisinger is a technology columnist who has covered everything from ...

Mozilla has released a new tool for developers this week, which has been designed to enable the ability to install an .xpi extension inside of a desktop version of Firefox and check it out. The new ...

A new, free alpha add-on from Mozilla makes it possible to test apps - and the Firefox OS itself - from within the web browser. All you need is Firefox, and a bit of time to work with the Simulator.