A highly-flexible test-running suite. It can quickly and easily be told to run tests with particular flags on, and you can specify precisely what tests you would like to run in a jiffy. For example, you can run tests (1,52)U(58)U(75,91) in the verbose mode on ModuleX by creating a script that extends TestScript, importing tester.TestCriteriaDialect._, and calling this in the body of your script: run((1 >&> 91) && (53 >!> 74) && 58 && Talkative, ModuleX).
This project is no longer under active development.
See here for a nice, simple example of its use.