A framework for testing concurrent Java applications
ScalaTest is a free, open-source testing toolkit for Scala and Java programmers.
Additional JPA matchers for Hamcrest
Automated combinatorial testing framework on top of JUnit
SpringUnit is a Java unit testing framework that combines Spring's dependency injection container with JUnit's test execution environment. It facilitates the creation of data-driven tests, where the data inputs and expected outcomes are defined in XML files and the test logic resides in Java source code.