Indian Christianity (Popularity: )
http://www.indianchristianity.com Provides information/research aids for Christianity in India, through St Thomas Christian Encyclopaedia of India, and the Indian Church History Classics.
Jewish Encyclopedia (Popularity: )
http://www.jewishencyclopedia.com/ Contains the complete contents of the 1906 Jewish Encyclopedia. Over 15,000 articles and pictures about the Torah, history, literature, biography, ...