I use theWord Bible Software exclusively for my Bible study preparation. It is free and very powerful and comes with hundreds of ad-on modules – many available right here on my site. Costas Stergiou is the of the software and he has invested over 14,000 hours in developing theWord. I and a team of volunteers have chipped in perhaps hundreds of hours in testing the software, developing training resources, as well as discovering and converting Bibles, dictionaries, commentaries, and books into theWord. Give it a try and spread theWord!