1. Windows
2. Developer Tools
3. Components & Libraries
4. Firefox OS Simulator Download

Test your app in a Firefox OS environment in this simulator

Firefox OS Simulator Screenshots

Firefox OS Simulator Editor's review

This add-on is large (50-70MB), because it bundles a complete simulation of Firefox OS, including its default apps. So it takes multiple seconds for Firefox to install the add-on. Sometimes it takes so long that Firefox's Unresponsive Script dialog appears. If that happens, press the Continue button to let Firefox continue installing the add-on. It will eventually succeed.

See the 3.0 release announcement for info about new features and enhancements in the latest version. For more details, look at the GitHub comparison between 2.0.1 and 3.0 and the comparison between the versions of Gaia in those releases.

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