Logos Bible Software has added several free 'goodies' to their lineup of software.
First, and most importantly, they have made available a free version of their standard Bible software engine (PC / Mac). You don't get a lot with this, just a copy of the King James Bible and the ESV Bible, but it is a place to start and you can buy add-ons to expand your digital library.
Second, is the RefTagger, which, with the implantation of a few lines of HTML code, will automatically convert all scripture references on your website or blog to previewable hyperlinks.
Third, are the Biblical language keyboards. These are foreign language keyboards that you can install on your Windows computer, and possibly Mac too, that allow you to type in Koine Greek, Classical Hebrew, and a few other languages.
There are more that are available, but to find out what they are, you are going to have to check out your self at the Logos goodies page.