Top 20 NuGet Unit Testing Packages

NUnitLite provides a simple way to run NUnit tests, without the overhead of a full NUnit installation. It is suitable for projects that want to have a quick way to run tests using a console runner and don't need all the features of the NUnit engine and console runner. Supported platforms: - .NET Fr...
This is the Flurl.Http package, repackaged with strongly named assemblies. See http://tmenier.github.io/Flurl for the official project.
NSubstitute is a friendly substitute for .NET mocking frameworks. It has a simple, succinct syntax to help developers write clearer tests. NSubstitute is designed for Arrange-Act-Assert (AAA) testing and with Test Driven Development (TDD) in mind.
Includes the libraries for writing tests with xBehave.net. Installing this package installs xunit.core.
Cross-platform performance benchmarking and testing framework for .NET applications.
Utilities to streamline unit testing in Dynamics CRM 2016 by faking the IOrganizationService against an In-Memory context which runs blazingly fast.
Utilities to streamline unit testing in Dynamics CRM 365 by faking the IOrganizationService against an In-Memory context which runs blazing fast.
A picture's worth a 1000 tests. Unit testing asserts can be difficult to use. Approval tests simplify this by taking a snapshot of the results, and confirming that they have not changed.
Library for running Xamarin.Forms inside of unit tests
Common helper classes developed with ApprovalTests
Sourcery for SauceLabs - Unlocking SauceLabs capability
Combined package to setup SpecFlow with NUnit easily for running the tests with the NUnit runners.
The most powerful free mocking library available for .NET developers.
Machine.Specifications (MSpec) adapter for .NET Framework and .NET Core including dotnet cli (dotnet test), Visual Studio IDE, TFS, Visual Studio Online, Visual Studio Team Services.
Advanced testing library for F#
A suite of Roslyn based convention specifications for enforcing code conventions in your codebase
Utilities to streamline unit testing in Dynamics CRM 2015 by faking the IOrganizationService against an In-Memory context which runs blazingly fast.
Framework to automate tests using Objectivity.Test.Automation.Common with NUnit
Framework to automate tests using Objectivity.Test.Automation.Common with xUnit
Pluggable foundation blocks for building distributed apps.