Firefox OS Simulator

Firefox OS Simulator is a test environment for Firefox OS. Use it to test your apps in a Firefox OS-like environment that looks and feels like a mobile phone. After installing it, go to Web Developer > Firefox OS Simulator to access its features.

Visit https://addons.mozilla.org/en-US/firefox/addon/firefox-os-simulator/ using Firefox Browser to install Firefox OS Simulator Extension.

After installed, you can open Firefox OS Simulator Dashboard by selecting Tools from Firefox menu -> Web Developer -> Firefox OS Simulator.

Firefox OS Simulator Dashboard

Next: Hello World! for Firefox OS WebApps