Jbehave or Cucmber?
These two tools have always been in a race and also have an equal fan following. When people ask me which tool would you choose, the answer is "it depends on a lot of other factors and not just technology"!
For the testing geeks who would want to read the exact JVM comparisons between JBehave and Cucmber this is the best possible source out there:
Happy BDD testing!