Free Apps SDK for windows 8.1

Free tools for a fast start

We make it easy to get started. All you need to build compelling apps for phones, tablets and PCs is in Visual Studio Express 2013 for Windows (with Update 2 RC). Included are universal app templates, a full-featured code editor, a powerful debugger, emulators, rich language support, and more, all ready to use in production.

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Samples to get you coding

We have dozens of code samples to get you up and running fast. They’re based on Visual Studio’s new universal app templates, letting you build for both Windows Phone 8.1 and Windows 8.1.

Get the sample code

Publish and win

We’ll help you get your Windows Store app ready for a successful launch through one of our worldwide community events or by connecting you with a Windows platform expert. When you’re ready, submit your completed app in our contest for a chance at one of hundreds of prizes.

Register to learn from the experts

Enter your app in the contest

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Get a developer account

Sign up to publish apps to the Windows Store and the Windows Phone Store.

Videos from Build 2014

Watch keynotes and sessions from the conference.

Building Apps for Windows blog

Get the scoop on developing and selling apps.

Developer forums

Ask questions and discuss issues with other developers.