Validation by: Andrew Arnott

Method input validation and runtime checks that report errors or throw exceptions when failures are detected.

WindowsAzure.Storage by: Microsoft

This client library enables working with the Windows Azure storage services which include the blob service for storing binary and text data, the table service for storing structured non-relational data, and the queue service for storing messages that may be accessed by a client. For this release see notes - http://msdn.microsoft.com/en-us/library/windowsazure/jj721952.aspx Windows Azure Storage team's blog - http://blogs.msdn.com/b/windowsazurestorage/

Xamarin.Build.Download by: Microsoft

Support for downloading and unpacking archives when building MSBuild projects

Xamarin.Essentials by: Microsoft

Xamarin.Essentials: a kit of essential API's for your apps

Xamarin.Facebook.ShareKit.iOS by: Microsoft

C# binding for Facebook ShareKit's official SDK

Xamarin.Firebase.iOS.Storage by: Microsoft

C# bindings for Firebase APIs Storage iOS Library

Xamarin.Google.iOS.SignIn by: Xamarin Inc.

C# bindings for Google APIs Sign In iOS Library

xunit by: James Newkirk, Brad Wilson

xUnit.net is a developer testing framework, built to support Test Driven Development, with a design goal of extreme simplicity and alignment with framework features. Installing this package installs xunit.core and xunit.assert.

xunit.core by: jnewkirk, bradwilson

Includes the libraries for writing unit tests with xUnit.net.

xunit.extensibility.execution by: jnewkirk, bradwilson

Includes xunit.execution.*.dll for extensibility purposes. Supports .NET 4.5.2 or later, and .NET Standard 1.1.

Xunit.Gherkin.Quick by: Tengiz Tutisani

BDD in .NET Core - Xunit.Gherkin.Quick is a lightweight, cross platform BDD test framework (targets .NET Standard, can be used from both .NET and .NET Core test projects). It parses Gherkin language and executes Xunit tests corresponding to scenarios.