Academic Info: Religious Studies
http://www.academicinfo.net/Religion.html
Although you will be asked initially for a donation to keep the site running, you can bypass their request or honor it, and then move into the site for extensive researching.

Wabash Center Guide to Internet Resources for Teaching and Learning in Theology and Religion
http://www.wabashcenter.wabash.edu/Internet/front.htm
"A selective, annotated guide to a wide variety of electronic resources of interest to those who are involved in the study and practice of religion: syllabi, electronic texts, electronic journals, websites, bibliographies, listserv discussion groups, liturgies, reference resources, software, etc."