Christian Classics Ethereal Library: a major site with many classic commentaries and resources.  www.ccel.org

The Desperate Preacher: www.desperatepreacher.com   The use of this site is recommended here for research and inspiration, rather than for borrowing sermons for one's own use!

New Testament Gateway, a mega-site of New Testament resources run by Dr. Mark Goodacre of The University of Birmingham, UK: http://ntgateway.com 

Wabash Center’s Guide to Internet Resources for Teaching and Learning in Theology and Religion: http://www.wabashcenter.wabash.edu/Internet/front.htm 

www.Belief.net.  Bills itself as the “world’s leading religion and spirituality e-community.”  A Grand Bazaar of religious convictions, everything from crop circles to tarot cards mixed in with chat communities where you can discuss Bible verses with like-minded Christians.

Religion Online: http://www.religion-online.org/ publishes numerous “Full Texts by Recognized Religious Scholars” arranged by category.

Yale Library’s Bible Reference Tools Tutorial: http://www.library.yale.edu/div/tutframe.htm 

The Catholic Encyclopedia.  A useful on-line encyclopedia, but dates back to 1913.  www.newadvent.org/cathen