E-Sword

www.e-sword.net

If you are unable to afford Logos, here is your next best bet. For free, it's worth the download just to have the search/study capabilities.

From the site: "e-Sword is a fast and effective way to study the Bible. e-Sword is feature rich and user friendly with more capabilities than you would expect in a free software package. The fact that e-Sword is free is just one of the blessings and does not speak of the quality of the software. I make my living writing software and I believe I have put forth my best effort in this endeavor. The real work, however, was put in by the godly men and women who devoted countless years creating the texts that have been made available for our benefit."