text: Extract, edit, and evaluate XPath queries with ease.
  Ruto - XPath Finder
  Ruto brings the best XPath to you. We are striving hard to improve better performance and more new features
  Relative XPath Helper
  Woohoo, just right click on the first and second element to get the relative xpath. Have Fun!!
  Toggle active state by clicking the extention icon. Then click on the DOM element and you get JS prompt with XPATH expression in it.