Unabridged Matthew Henry's Commentary on the Whole Bible (best navigation)
Bible Encyclopedia (ISBE)
A Complete Bible Reference Study Library (4 in 1): [Illustrated]: KJV Bible with Strongs markup, Strongs Concordance & Dictionaries, Lexicon Definitions, and Bible word index
Bible (Young's Literal Translation) (best navigation with Direct Verse Jump)
KING JAMES BIBLE TOUCH - KJV
The NIV Zondervan Study Bible, eBook: Built on the Truth of Scripture and Centered on the Gospel Message
Gill's Bible Commentary
KJV Study Bible, eBook: Second Edition
ESV Study Bible
HCSB Study Bible