A model-based test automation framework for GUI applications
This framework supports a wide variety of model-based GUI testing techniques. The innovation lies in the architecture of GUITAR, which uses plug-ins to support flexibility and extensibility. Software developers and quality assurance engineers may use this architecture to create new toolchains, new workflows based on the toolchains, and plug in a variety of measurement tools to conduct GUI testing.
More detail is presented in this publication:
GUITAR: An Innovative Tool for Automated Testing of GUI-driven Software. ...
Otter Unit Test Framework is a tool which performs automated Unit Test in .NET 4,0 or above applications. It works similarly to the JUnit and it used as part of the application being tested, in MS Web or C# Developer 2010.
Older versions (00.05 and below) were developed for MS Visual Studio 2005 and can still be downloaded. For them, a MS Visual Studio Plugin was developed and in the project´s home page you can find its documentation.