The Typemock Isolator mocking developer tool is an ad in for Visual Studio .NET (vs 2005/vs 2008) that simplifies unit testing and Test Driven Development (TDD) by making a cleaner code and eliminating the need to refactor and restructure your code specifically for unit testing and Test Driven Development (TDD). This .NET add in gives the Agile developer tools to isolate, stub or mock any class in the system. . For example .NET developers can isolate, stub or mock sealed classes when unit testing. The Typemock Isolator isolation framework also allows the .NET Developer to easily adopt Agile practices such as: Test Driven Development (TDD), Behavior Driven Development (BDD), Dependency Injection (DI), Aspect Oriented Programming (AOP), Inversion of Control (IOC) and more. The Typemock Isolator developer tool simplifies unit tests and helps .net developers to perform agile practices. The software installation supports .NET 2.0, 3.0 and 3.5 (C#, VB, VB.NET, ASP.NET).