Looking to use Groovy with [insert your favorite Java library here]? We've got you covered! Groovy integrates very well (and sometimes greatly extends) a large number of existing Java libraries and tools:
TODO: tag all the other pages that talk about integration with x
Finally, if you don't see what you're looking for in the above list, remember – Groovy is Java! Just put that JAR in your classpath and start using it as if you were programming in Java. If you are running into problems with method ambiguity, go here.