Judy

The latest stable Judy release is

Judy 2.1.0

release notes Jan 26, 2014

Mutation testing

short and sweet: it allows for automated measuring of your unit test's quality
many publications and articles spanning over 30 years of research

modern mutation tester written in Java for Java
27 mutation operators (and counting!) to bend your source code into every direction and make sure your unit tests are top-notch
cluster support
works on Windows and Linux

First, make sure it's not covered by the documentation.

Found a bug? Head down to our bug tracker and let us know about it!

If all else fails, see the contact page for other ways of reaching us.

To learn more about how to use Judy, check out the Documentation