Technically speaking, BDD is a practice but it stresses on a certain format to write tests in. Hence, the BDD practice is typically paired with a BDD tool. I use the term “BDD” in this PPT to refer to “BDD tool”. I do not delve into the “BDD practice” as it can fit in either with TDD or ATDD based on level of testing.Imagecredits:http://upload.wikimedia.org/wikipedia/he/b/b0/JUnit_logo.PNGhttp://cukes.info/images/cuke_logo.pnghttp://www.fitnesse.org/files/images/FitNesseLogoMedium.jpghttp://jbehave.org/images/jbehave-logo.pnghttp://www.nunit.org/img/logo.gifhttp://www.specflow.org/specflownew/css/logo.png