A few words of thanks would be greatly appreciated.

Install the Firefox OS desktop build

Firefox OS Simulator is an add-on for the Firefox browser allowing you to run Mozilla's new operating system directly from your browser. You don't need to get your hands on a new mobile phone to get a glimpse of the Firefox OS, all you require to get started, is a PC connected to the internet and the Firefox web-browser!


  • Open Firefox and go to this page: https://addons.mozilla.org/en-US/firefox/addon/firefox-os-simulator/
  • Click on the "Add to FireFox" button to download the add-on.

  • When prompted, click on the Install button.

First launch

  • Once installed you can launch Firefox OS Simulator using the below method:
  • Click on the Firefox button > Web Developer > Firefox OS Simulator

  • Turn the simulator on.

  • Firefox OS shall open in a new window:


A few words of thanks would be greatly appreciated.

Ask a question
CCM is a leading international tech website. Our content is written in collaboration with IT experts, under the direction of Jean-François Pillou, founder of CCM.net. CCM reaches more than 50 million unique visitors per month and is available in 11 languages.
This document, titled « Install the Firefox OS desktop build », is available under the Creative Commons license. Any copy, reuse, or modification of the content should be sufficiently credited to CCM (ccm.net).