• Mystery Babylon
• Mega site of Bible studies and information 
• The Prophetic Years Bible Prophecy and Revelation Commentary 
• The Watchman's Time
• Pilgrim's Call
• Christianity and Islam - The Final Clash
• Revelation Station
• Bible Prophecy Revealed
• Prophecy Focus - New, Used, Scarce, Christian, Prophecy Books, & Audio Tape Sets
• Revelation 13
• Beyond the Rim
• Lions Roar Report (I highly recommend this site)
• Islam - the Cloak of Antichrist in Bible Prophecy

Here are some more great books about Prophecy