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Welcome Developers

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Join Dev Center and publish your app in the Windows Phone Store.

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Download the tools to build great Windows Phone apps.

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View code samples from Microsoft and the community to get started.

Developer registration opens in 13 new markets

More than 100 fixes and improvements in latest Dev Center update, including new markets available for developer registration.

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Showcase

Check out the stories people have shared about the apps they’ve created and how they’ve used the power of the Windows Phone platform.

Take a tour of Dev Center

Get the full scoop on what's new and different on Dev Center.

4th & Mayor

Creator Jeff Wilcox shares his best practices for building Windows Phone apps.

Patterns & Practices

The Windows Phone Patterns & Practices team gives us insights into the tools they’ve built to help you build great Windows Phone apps.

Background Agents

Windows Phone’s Peter Torr explains Fast App Switching, Background Notifications, Background Transfer Service and Background Agents.