1.0 Release! TestDriven.NET not only allows you to run unit tests from anywhere in your Visual Studio solutions, but also unites many different testing frameworks (NUnit, MbUnit, csUnit)! This VS.NET add-in provides context menus, solution explorer options, and tools for integrating testing throughout all phases of development. You can run your tests in their own runner process, which gives you side-effect free testing. And best of all it has support for Visual Studio Team System.