Concordion is an open source tool for writing automated acceptance tests in Java*

• There are also versions for .NET, Python, and Ruby. [More details]

“Lets you write business tests that don't assume a particular implementation.” Key Features

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  Powerful, yet simple to use Concordion integrates directly with JUnit.
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  Highly readable tests Concordion acceptance tests are so readable they can double up as system documentation. And, since the tests are linked to the system, you know the documentation is always up-to-date.
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  Separates tests from implementation Tests that include a lot of implementation detail lock you into that implementation. Concordion helps you to document the logic and behaviour of your system in a way that does not