Create native iOS, Android, Mac and Windows apps in C#. Xamarin apps are built with standard, native user interface controls. Apps not only look the way the end user expects, they behave that way too. Xamarin apps have access to the full spectrum of functionality exposed by the underlying platform and device, including platform-specific capabilities like iBeacons and Android Fragments. Xamarin apps leverage platform-specific hardware acceleration, and are compiled for native performance. This can't be achieved with solutions that interpret code at runtime.

More Types, Less Typing
C# uses type inference to give developers more safety in fewer keystrokes, without boilerplate or verbose type annotations.

Language-level Async
Asynchronous programming (async) keeps apps responsive. In Objective-C, Swift and Java, async requires callbacks and manual bookkeeping. C#'s language-level support makes async a breeze.

Stronger Types, Smarter Tools
Generics guarantee that collections and other compound types are used safely, without the need for casts or comments. Xamarin tools understand intent better thanks to richer types, with benefits like ubiquitous code completion.

First-class Functions
In Java for Android, lambdas are unavailable. In Objective-C, lambdas are extremely cumbersome. In C#, lambdas couldn't be simpler, making functional programmers feel right at home.

Native user interfaces, built right before your eyes.
Xamarin apps use native UIs on every platform to enable the best possible experiences. Simplify mobile app design with our Android and iOS designers, and build your own app today.

Share code everywhere.
Use the same language, APIs and data structures to share an average of 75% of app code across all mobile development platforms. Build user interfaces with Xamarin.Forms and share nearly 100%.

Bring your apps to 66 million Macs.
Whether you're creating a companion desktop application for a mobile app, or bringing a Windows application to the Mac, Xamarin.Mac is the fastest path to your destination.

Use AppKit with Interface Builder.
Use XCode's Interface Builder to design your Mac app visually, then program your AppKit UI while sharing C# with iOS, Android and even Windows.