Theophilos is a software program I’ve used for years. There might be something better out there by now but I think this is hard to beat. It is officially discontinued but still available as of this date. While the new owners – PocketBible (Laridian) say they are in the process of phasing it out. I have no idea how good their Pocket Bible is. I always say, if it works, don’t fix it and Theophilos has always worked for me. As far as support is concerned, I’ve never needed it.
One the download page above you’ll also find several free downloads including other Bible versions in English and other languages, commentaries and other goodies. I downloaded most of them, though I don’t often use them. What I do use is the KJV with Strong’s numbers. Granted, it’s hard to read but I only use it when I want to ID the original word.
When it comes to researching individual words, I’ve found the Blue Letter Bible to be an excellent online source. This often comes up when I search for a word by the Strong’s number. For example, suppose I came across the word “Jews” (Strong’s G2453) . I can type in “G2453” directly into the search engine and the BLB link comes right up. That page offers a wealth of information such as the actual Greek word, definitions, etc. If you want to get started in the fascinating world of biblical research, this is a good way to start. If your online access stinks or you prefer to work offline you can use either a Young’s or Strong’s concordance and a bible dictionary.
A note on the Pocket Bible: call me spoiled due to my experience with Theophilos but the PB people seem to be comparatively money-hungry. While they do offer some of the English versions of the Bible for free, they do not offer all I could get with Theophilos. Most notably, the KJV with Strong’s numbers. They also do not offer the wealth of commentaries. I have all but the non-English and I do not see where I cannot give them to someone else so if this resource runs dry, feel free to contact me.