Microsoft's Windows Phone is the successor to Windows Mobile. It was first released in 2010 and features a touch-friendly Metro interface. Current versions include Windows Phone 7.5 Mango, with features like social and productivity hubs, Microsoft Office, SkyDrive cloud storage, and Xbox Live integration. Future updates will add support for multiple resolutions, native code from Android and iOS, and technologies like NFC and multi-core processors. Windows Phone offers developers tools like Visual Studio and supports languages like C# for building apps for its Marketplace store.