# Xamarin
- [Wikipedia: Xamarin](https://en.wikipedia.org/wiki/Xamarin)
- [dotnet.microsoft.com: Xamarin](https://dotnet.microsoft.com/apps/xamarin) Free. Cross-platform. Open source.
An app platform for building Android and iOS apps with .NET and C#.
- [dotnet.microsoft.com: What is Xamarin?](https://dotnet.microsoft.com/learn/xamarin/what-is-xamarin) Xamarin is an open source app platform from Microsoft for building modern & performant iOS and Android apps with C# and .NET.