What are the languages used in Xamarin?

Hi Guys,

Xamarin is a software company based in San Francisco which is owned by Microsoft. In 120 countries developers use Xamarin tools to write native iOS , Android and Windows apps and share code across many platforms, Can you guys tell me what are main programming languages used in Xamarin?

Hi! Xamarin applications are written in C#...

According to their website they are using they extend .Net developer platform and they seems to be using a language combo of C#, F#, or Visual Basic.