Top 20 NuGet Unit Testing Packages

Specifications made easy.
Unit testing framework for Sitecore.
This package contains extensions to the Microsoft Visual Studio Team Test unit testing framework. Features include alternatives to ExpectedExceptionAttribute and a fully extensible assertion application programming interface.
Unit testing framework for Sitecore.
The EventSource Analyzer is part of the Semantic Logging Application Block. It can be incorporated into your automated tests to help validate your EventSource instances.
White is a framework for automating rich client applications based on Win32, WinForms, WPF, Silverlight and SWT (Java) platforms. It is .NET based and does not require the use of any proprietary scripting languages. Tests/automation programs using White can be written with whatever .NET language, ID...
TestStack.White.ScreenObjects adds support for the Page Object Pattern, allowing you to write clean maintainable UI Tests
Friendly interface is pinned by order interface.
You will be able to manipulate Infragistics Xam Controls. This library is built on Friendly Layer.
Unit test framework for Bridge.NET projects. Write tests in C#, run them in JavaScript.
QUnit installation into Bridge.NET projects.
Unofficial Report Portal SpecFlow agent
Package Description
NUnit features a fluent assert syntax, parameterized, generic and theory tests and is user-extensible. A number of runners, both from the NUnit project and by third parties, are able to execute NUnit tests. Version 2.6 is the seventh major release of this well-known and well-tested programming tool...
Mailosaur .NET client library. Mailosaur allows you to automate tests that require email. You can use it with tools like Selenium, Ranorex, Robot framework etc... You can also use it for manual testing as it gives you unlimited test email addresses or use it as a fake/dummy SMTP service. For more...
SpecFlow generator plugin that adds ability to retry tests on failure for MSTest/NUnit.
NUnit attributes extenstions for Allure
Useful tools when unit testing applications that use Entity Framework Core. See readme file on github.
A collection of xUnit.net assertions, tailored for Tiger libraries.
A set of abstractions to help make file system interactions testable.