Top 20 NuGet testing Packages

The fastest and smoothest way to great architecture
A simple but powerful factory for creating objects for testing purposes.
It's a very subtle test data factory with flexible capabilities to customize created objects. Permanent customizations per type can be defined in order to be always applied on-the-fly to objects being created. At the same time any number of additional ad-hoc customizations can be applied in particul...
PsTest is a PowerShell unit testing framework. PsTest is a binary PowerShell module written in C# .NET. PsTest uses a syntax very similar to the QUnit JavaScript unit testing framework, which is used to test jQuery.
A .NET 4.5 library which adds helper classes for unit testing against the MicroLite ORM Framework.
XtUnit is a unit testing extension for .Net based frameworks. It uses the interception application block to provide runtime abilities of rolling back any changes that were made to the database during Data related unit tests.
A node.js and standalone mono-based web server powered test harness for ASP.NET MVC. Write your tests in JavaScript or CoffeeScript and use the best of both worlds
A library for filling your testing objects with realistic test data.
Classes to help testing ASP.NET MVC3 applications.
Classes to help with testing a .NET application using entities.
A fluent assertion module for PowerShell. Part of the PSST PowerShell Suite for Testing.
A mocking library for PowerShell, including dyamic mocks, multiple context levels, call tracking. Part of the PSST PowerShell Suite for Testing.
MockJockey is a framework written in and for Csharp assemblies with the purpose of allowing engineers to unit test their code in a precise, concise, and quick manner. Using mock objects in unit tests, allows your unit tests to be focused by side-stepping any irrelevancies of the test. Commonly thoug...
A simple test runner agnostic BDD framework
A test runner module for PowerShell, supporting TDD- and BDD-style test cases, NUnit-compatible test results, batch running or ISE F5 testing, and setup/teardown constructs. Part of the PSST PowerShell Suite for Testing.
A simple test runner agnostic BDD framework. This version is signed.
TestApi is a library of test and utility APIs that enables developers and testers to create testing tools and automated tests for .NET and Win32 applications. TestApi provides a set of common test building blocks -- types, data-structures and algorithms -- in a simple, layered, componentized and doc...
A small framework and runner for .NET performance testing.
Simple BDD
A collection of helper classes to aide in testing .NET applications