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Hi there, I'm Potch.

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I'm a web developer at Mozilla and I want to take a few minutes to talk to

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you about the new Firefox OS Simulator, tell you how to install it, and how to use it.

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The Firefox OS Simulator is an extension for Firefox that makes it easy for an App Developer to

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test out their app in Mozilla's upcoming Firefox OS mobile platform

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as they develop their app without needing a phone.

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You can find the extension on the Firefox Add-ons website at

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addons.mozilla.org.

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We'll search for Firefox OS Simulator.

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Version 1 of the Simulator is a preview release but

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it's been reviewed by Add-ons staff so it's safe to install.

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It's a fairly large download because it contains a full copy

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of Firefox OS compiled to run on a PC instead of a phone.

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Once it's done downloading we just click install and there we go.

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To launch the simulator go to the menu bar and select

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Tools> Web Developer> Firefox OS Simulator.

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This is the simulator dashboard, the dashboard is the

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place where you manage your installed apps and launch the simulator itself.

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Before we install some apps let's launch the Simulator to see what it looks like.

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The Simulator launches as a separate desktop application.

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Here you can see the lock screen.

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We can swipe up from the bottom to unlock the phone.

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On the home screen you can scroll around to see a list of the pre-installed applications.

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At the bottom, the is a home button to simulate

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the home button on the device itself.

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Now that we've explored the simulator some, let's install an app.

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In my day job, I work on the Firefox Marketplace.

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So let's test that.

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In the dashboard enter the URL of the app that you would like to test.

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It will auto-complete URLS from any open tabs you have.

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Once you click Add URL it will automatically launch running that app.

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Here we see the mobile version of the Marketplace.

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As you can see, the Simulator makes it easy to test out a web app in just a few clicks.

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Additionally, after you install an App,

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its icon will be placed on the home screen so you can launch it later.

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Even though this is just a preview, I hope you'll try it out and let us know what you think. Thanks!