Ryan Henrie has a great resource for LDS infobases. Folio Views Infobases are a full-text indexed data format for unstructured documents (like books). It's what all the LDS CD-ROM collections used before Deseret Book bought up the major players. Many CD-ROM collections use Folio Views, from Signature Books' New Mormon Studies CD-ROM to the Church's $3 LDS Church Magazines 1971-1999 CD. If you own a copy of such a CD, you can open the files offered for free download from LDSInfobase.Net.
Included in the LDS resources section are the 1830 Book of Mormon, General Conference addresses from 1897-1970, with a very handy index that allows you to search by speaker, the 26-volume Journal of Discourses, also with the ability to search by speaker, and the LDS Quad with Strong's Concordance of Biblical Greek and Hebrew. This last is what I use as my electronic scriptures.
In addition to other LDS infobases, there are numerous non-LDS infobases that are very useful, including the Apocrypha, writings of the Early Church Fathers, the complete works of Josephus, and other philosophical and religious resources. And all of this is offered free of charge. Enjoy!