What is "xamarin"

Xamarin is a Microsoft-owned San Francisco, California-based software company founded in May 2011 by the engineers that created Mono, Mono for Android and MonoTouch that are cross-platform implementations of the Common Language Infrastructure (CLI) and Common Language Specifications (often called Microsoft .NET).

With a C#-shared codebase, developers can use Xamarin tools to write native Android, iOS, and Windows apps with native user interfaces and share code across multiple platforms. Over 1 million developers use Xamarin's products in more than 120 countries around the world as of May 2015.

On February 24, 2016, Microsoft announced it signed a definitive agreement to acquire Xamarin.

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