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 ...

Now when you add an app to the Firefox OS Simulator, it checks your manifest file for errors and warnings, including problems that prevent installing the app in the simulator, usage of APIs that the ...

Once installed, it will be available in Firefox under the Tools => Web Developer menu. The arguably biggest addition to version 3.0 is the new Push to Device feature. If you have an existing device ...

Earlier this month Mozilla announced the first developer preview phones specifically designed for its Firefox OS. The phones -- two of them -- are being developed by a Spanish startup called ...

Mozilla has lifted the lid on the first two devices to run its forthcoming Firefox OS, making them available developer preview handsets or purchase in February. The mobiles named the Keon and the Peak ...

Browsers have long contained development tools to help debug and diagnose problems when authoring Web content, but Mozilla is taking Firefox to the next level. Nightly builds of the browser now ...

Introduced in January 2013, Firefox OS is a new mobile, Linux-based open source operating system for smartphones from Mozilla, a free software community also known as the creators of the Firefox Web ...