Top 20 NuGet Unit Testing Packages

A simple package to speed up the assertion of parameters of methods mocked with Moq
HttpLoadTesting http load generator framework
A tool to compare expression trees
Testify is a unit test assertions, test data creation and contract verification framework. It's not dependent on any specific unit testing framework. Testify.Moq adds mocking support via Moq.
Contains an implementation of DbContext mock that uses in memory collections for the DbSets
MR.AspNet.Identity.EntityFramework6 implementation that uses an int as the primary key for users and roles.
A simply tool to facility TDD in database migration using FluentMigrator.
Easy-to-use toolset for building Web UI automation and testing code. It provides an easy way to build Page Objects without needing to know much about Selenium.
Helper classes to test components using Kralizek.Assembla.Connector.
Harness is a .NET library designed to manage the state of one or more Mongo databases during testing.
Inter application test enabler library
An extension of Kekiri to support SimpleInjector-aware ScenarioTests
Specify is a .Net testing library that builds on top of BDDfy from TestStack
Test feature for temporary database in PostgreSQL server
Components for testing Histrio based actor systems
Test feature for temporary database in PostgreSQL server
Brings an AutoMockFeature which initializes AutoFixture with Moq.
Add FileSandboxFeature to your TestFixture (F2F.Testing.MSTest)
The base class TestFixture provides a registry for test features which are automatically disposed after each test case.
NUnit constraints for testing and validation XML.