Apologetics Index: Database and glossary of information on cults, sects, new religious movements, doctrines, and counter-cult organizations

Watchman Fellowship: Hundreds of articles and links to resources on cults and alternative religions; a 1200-entry, cross-referenced Index of Cults and Religions

World Religions Index: Testimonies of conversion from various religions to Christianity, recommended links, and tables and articles comparing Christianity to other religions and philosophies