Top 20 NuGet Unit Testing Packages

You will be able to get the desired window. This library is built on Friendly Layer.
Key mouse emulation can be performed on Windows applications at high speed and with high accuracy. This library is built on Friendly Layer.
Library for running Xamarin.Forms inside of unit tests
A .NET framework that supports writing low-ceremony BDD tests using Gherkin language.
It's what a Mocking Framework should be. Powerful. And it's the first of its kind.
Redbridge C# Windows Integration Testing Library for unit testing full service architectures
A number of simple methods to test database objects and execute sql. Currently supports Microsoft SQL Server databases.
VsTest extension for reporting test results into Report Portal
TestFactory is a utility which helps composing and orchestrating test runs. TestFactory allows to create collections of test steps and guarantees that test steps run in a specific order. The result of a test run is summarized in a test summary.
SecByte.Xunit.Gherkin is a modified version of Xunit.Gherkin.Quick
This extension allows NUnit to recognize and load NUnit projects, file type .nunit.
This extension allows NUnit to load and run tests compiled against earlier versions of the NUnit framework. Versions 2.0 through 2.6.4 are supported.
This extension allows NUnit to create result files in the V2 format, which is used by many CI servers.
NUnit console and Visual Studio runner for .NET Core and .NET 4.5.1+
Magenic's automation quick start open source framework
SpecsFor is another Behavior-Driven Development framework that focuses on ease of use for *developers* by minimizing testing friction.
Should extensions for the XUnit framework
Capture serilog log events to xUnit output
Provides LightBDD framework with common classes and features for all LightBDD integrations. High level features: * native support for refactoring, code analysis (like finding unused methods), test running and all features that Visual Studio / Intellisense / Resharper offer during code development; ...
An open source code coverage tool (branch and sequence point) for all .NET Frameworks 2 and above (including Silverlight). Also capable of handling 32 and 64 bit processes. Use ReportGenerator 1.9 for best viewing results (also available via Nuget).