Spock is a testing and specification framework for Java and Groovy applications. What makes it stand out from the crowd is its beautiful and highly expressive specification language.

Core classes for Specs2, a library for writing executable software specifications in Scala

'Flexible' or 'fluent' assertions for testing

XMLUnit for Java

Core of FluentLenium

Specsy Core

Probably is a testing library designed to unintrusively provide test recording and reporting capabilities to any codebase, regardless of the users’ choices of libraries or programming paradigms.

Java Functional Testing Framework Core

A BDD / Testing framework with pure Groovy DSL, running in a Spark cluster, advanced reporting and clearly define the boundary between BA Tester / developer