New Testament Hyper-Concordance
From reading Brian Bill's blog, I learned about a new Bible study tool called the New Testament Hyper-Concordance. It's an online concordance to every important word in the New Testament. You click on a word like "obey" or "Egypt" or "road" or "heaven" and the program immediately displays every mention of that particular word in the English Standard Version. Very helpful for personal Bible study or sermon preparation.