# Cross platform mobile developmental
Xamarin is a software that needs no introduction. It is a name that has changed the face of cross-platform development today.Cross platform mobile developmental companies are well aware about Xamarin, its usage and benefits in app development. Still, for those who have just stepped into this developmental aspect, here’s a brief about this amazing software.Xamarin is a Microsoft-owned software that simplifies the development of mobile applications using cross platform mobile app development. It allows mobile app development companies to write native iOS, Android and Windows apps with a C#-shared codebase. By using Xamarin tools, mobile app developers can also share their native code across multiple platforms.Today, over 1 million app developers in more than 120 countries around the world use Xamarin's products to develop their mobile apps.And… what’s more!Earlier this month, Microsoft released support for .NET Standard Libraries for all Xamarin application, which means that this amazing software can now be used to work with .NET Standard Libraries too. While this includes developing and using local .NET Standard Libraries, this also includes adding .NET Standard Libraries from NuGet directly to the Xamarin apps. Moreover, it’s now convenient to share code across all .NET platforms, which also include the recently launched ASP.NET Core and .NET Core and platforms.Let us know about .Net libraries.What is .NET Standard Library?It is a “proper specification of .NET APIs intended to be available on all .NET runtimes”. It can be thought of as a simplified, but extended Portable Class Library.In other words, .NET Standard Library is single library with a standardized API for all the .NET Platforms, which includes .NET Core. Simply create just one .NET Standard Library and use it from any supporting .NET Standard Platform.According to Microsoft, .NET Standard Library enables the following:Defines a standard set of BCL APIs for various .NET platforms to process, irrespective of the workload.Allows developers to generate portable libraries that can be used across all .NET platforms, using this same set of APIs. Minimizes and avoids conditional compilation of shared source because of the .NET APIs, just for OS APIs.This new functionality can be used in the Xamarin Studio IDE and in Visual Studio 2015. However, the latter should possess Update 3 and is updated to include Xamarin 4.1.2.Benefits of Using Xamarin Cross DevelopmentUndoubtedly, Xamarin is worth paying attention. Here are reasons why cross platform app development companies prefer using Xamarin fo their OS and Android cross-platform app development.Fewer Learning – With Xamarin, developers just need not to learn, C#, and no other language. This is because one core set of classes in C# is effective on both the platforms. Limitless – Xamarin embraces the features of each platform it uses and doesn't try to force commonality unnecessarily. This combination of two different platforms offers an endless range of features for the developers to use from. Quicker reach to market – With Xamarin, developers can code application logic only once and share it across both the platforms. This in turn helps the developers to focus entirely on app building and shipping. This saves us a lot of their time resulting in faster app delivery to the market. Less bugs – Since Xamarin offers faster time to market and requires less code writing, chances of bugs are also fewer, because the less code you write, the fewer are the errors. Thus, to conclude, it can be said that Xamarin is gaining more attention with each passing day and with good reason. It is like a tool set that enables development in multiple platforms with least chance of work duplication.