WordSearch is not quite as easy to use, as far as I'm concerned, but it is a bit more colorful, and is pretty comparable with e-Sword, as far as the things it can do. Performing searches is easy, and there are numerous free modules available, including Greek New Testaments, and a few older commentaries.
For those who would like Bible study software they can carry with them on a USB flash drive, I have two recommendations: TheWord and BPBible. Even though I prefer TheWord for the flexibility of its layouts, I discovered yesterday (playing around with a few programs that I hadn't used in awhile) that BPBible's modules are exceptionally easy to install. You merely download the modules, and drag and drop them on the application, and bingo! you're done. Nice feature, that. It's also connected with The Sword Project, which coordinates with a variety of different free study applications, which you may find here.
Another one of my favorites, which will especially appeal to those who prefer the King James Version in general, is Bible Analyzer. BA doesn't have nearly as many free modules as some of the others, but its basic free package has all kinds of interesting features, and the website has lots of excellent tutorials to help the user learn about the application. I've been using it for a few years now, and they keep improving it.
I believe the above programs are some of the better free applications out there, and I will be updating my Links page to include more information about them, as well as some screenshots. Stay tuned for further developments.