Free Bible Software with commentaries, etc. http://www.e-sword.net/
Classic Bible Commentaries http://eword.gospelcom.net/comments/
Audio Bible KJV http://www.audio-bible.com/bible/bible.html
Blue Letter Bible, bible search http://www.blueletterbible.org/
Treasury of Scripture Knowledge http://www.searchgodsword.org/com/tsk/
By Author:
Easton's Bible Dictionary with Strong's http://eastonsbibledictionary.com/
Edersheim, The Life and Times of Jesus the Messiah http://philologos.org/__eb-lat/
Edersheim, The Bible History, Old Testament http://philologos.org/__eb-bhot/
Edersheim, Sketches of Jewish Social Life http://philologos.org/__eb-sjsl/
Edersheim, The Temple, It's Ministry and Services http://philologos.org/__eb-ttms/
Henry, Matthew Commentary http://www.ccel.org/ccel/henry/mhc.i.html
Hislop, The Two Babylons http://philologos.org/__eb-ttb/
Hitchcock's Bible Names Dictionary http://www.ccel.org/ccel/hitchcock/bible_names.txt
Josephus,Flavius Resources http://www.ccel.org/ccel/josephus/works/files/works.html
Nave's Topical and Torrey's Topical Textbook http://www.biblegateway.com/topical/
Smith's Bible Dictionary http://www.ccel.org/ccel/smith_w/bibledict.toc.html
Webster's 1828 & 1913 Dictionary Search http://machaut.uchicago.edu/websters