Xamarin

Xamarin's mission is to make it fast, easy and fun to build amazing, native mobile apps. Xamarin's cross-platform, mobile app development software allows developers to use their existing skills and tooling to build fully native apps for iOS, Android and Windows Phone, while sharing up to 90% of source code across device platforms. Indie developers, contract teams and enterprise organizations use Xamarin to accelerate and simplify the creation of high-performance, native consumer and corporate applications. Xamarin is headquartered in San Francisco, CA with an engineering office in Cambridge, MA.