This list is intended to be a helpful guide only, it is by no means exhaustive, and we do not necessarily endorse the opinions of those who operate these sites.
http://commanetwork.com/
http://carm.org/muslims-please-read-this-first
http://answering-islam.org/
http://www.answer-islam.org/
http://contenderministries.org/islam.php
http://www.rim.org/muslim/musapol.htm
http://www.apologeticspress.org/apcontent.aspx?category=8&article=254
http://mychristianapologetics.com/2010/01/30/christianity-vs-islam-a-triathlon-round-3--the-problem-of-evil.aspx
http://christian-apologetics-society.blogspot.com/2008/10/why-men-flock-to-islam.html
http://capro.info/
http://www.christiananswers.net/evangelism/beliefs/islam.html
http://christiancadre.blogspot.com/2005/07/are-you-prepared-to-evangelize-muslim.html
http://trevinwax.com/2010/03/24/gospel-confidence-in-evangelizing-muslims-an-interview-with-thabiti-anyabwile/