Oxford Islamic studies online
Offers encyclopedia and dictionary articles, scholarly and introductory essays covering such subjects as history, culture, politics, religion, people, and concepts as related to Islam, plus two English translations of the Qur'an, a concordance for scholars working with the Qur'an in English, and two resources providing interpretations. Secondary sources are updated three or four times a year. The database can be searched by the branch of Islam, country, region, author, title, subjects, and other features. Historical periods covered include pre-Islamic to the present and includes primary sources.