The simplest mocking library for .NET 3.5/4.0 and Silverlight with deep C# 3.0 integration.

Rhino Mocks is using Castle Dynamic Proxy (http://www.castleproject.org/dynamicproxy/index.html) to handle proxying the types it needs to mock. The Dynamic Proxy project has been invaluable resource and made creating Rhino Mocks possible.

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.

XML-based Mocking adapter for the Simple.Data data access library.

It's faking amazing! The easy mocking framework for .NET that works great in C# and VB.NET alike. No need to know the difference between a stub, a mock or a spy, everything's a fake! The easy to use, refactoring friendly API makes faking a breeze.

Automock implementation using Ninject to create the objects under test.

This extension turns AutoFixture into an Auto-Mocking Container. The mock instances are created by Moq. To use it, add the AutoMoqCustomization to your Fixture instance. Read more at http://blog.ploeh.dk/2010/08/19/AutoFixtureAsAnAutomockingContainer.aspx

Automock implementation for Moq using Ninject to create the objects under test.

Easy to use framework for creating mock objects, fakes, stubs with an intuitive and fluent API.

Contributed features and third-party integration for Moq.

Unit testing simplified

NMock3 is a Mocking framework that uses lambda syntax to setup expectations and test interactions between classes and interfaces.

Automock implementation for RhinoMocks using Ninject to create the objects under test.

Test utility to instantiate a class by creating mocks for each of its dependencies

This extension turns AutoFixture into an Auto-Mocking Container. The mock instances are created by Rhino Mocks. To use it, add the AutoRhinoMockCustomization to your Fixture instance. Read more at http://blog.ploeh.dk/2010/11/13/RhinoMocksbasedAutomockingWithAutoFixture.aspx

Machine.Specifications.AutoMocking attempts to reduce noise in Machine.Specifications (MSpec) tests when creating mock objects, dependencies and the subject under test.

Pester provides a framework for running BDD style Tests to execute and validate PowerShell commands inside of PowerShell and offers a powerful set of Mocking Functions that allow tests to mimic and mock the functionality of any command inside of a piece of powershell code being tested. Pester tests can execute any command or script that is accesibl... More information

Automock implementation for NSubstitute using Ninject to create the objects under test.

This extension turns AutoFixture into an Auto-Mocking Container. The mock instances are created by FakeItEasy. To use it, add the AutoFakeItEasyCustomization to your Fixture instance. Read more at http://autofixture.codeplex.com/

Auto-mocking Autofac container that uses NSubstitute.