Adherents.com
- http://www.adherents.com/
- Resources for research into world religions, large and (very) small. Includes links to websites, research papers, statistics, and specialized search engines.
American Religion Data Archive
- http://www.thearda.com/
- Collection of quantitative survey data on churches and church membership, religious professionals, and religious groups (individuals, congregations and denominations). Data sets available for download.
American Religious Experience
- http://are.as.wvu.edu/
- The American Religious Experience Project encourages the depiction and study of the rich and varied tapestry of the American religious experience on the World Wide Web. The project directors welcome manuscript submissions.
The Pluralism Project
- http://www.pluralism.org/
- Harvard University project studying the growing religious diversity of the United States. Includes teaching resources, articles, and details of current research.