BugEye is an XML-based unit test creation framework. Being XML-based, it can be easily translated to almost any language. The current translations are C#, Java, JavaScript, and Visual Basic. Future translations include C++, Python, Perl, and PHP.
Avignon is an acceptance test system that allows you to write executable tests in a language that you define. It uses XML to define the syntax of the language but, if you choose to extend the language, leaves the semantics of the tests up to you.
A common problem with testing tools such as NUnit and JUnit is the need to have reliable, consistent data to test against. This tool provides a way to load and unload test data into a database for unit test purposes (as well as any other data loading nee