ATLA (American Theological Library Assoc.) Religion Indexes

Britannica Online

Cambridge Collections Online 

Cambridge Quarterly of Healthcare Ethics 
Catholic Periodical & Literature Index 
Current History

Dissertation Abstracts
Ebrary       Full-text online academic books
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Elenchus Bibliographicus
Encyclopedia of the Qur'an
Ephemerides Theologicae Lovanienses  (Louvain Journal of Theology & Canon Law)
FirstSearch  

Highwire (searchable full-text biomedical literature from Stanford)
Humanities Fulltext
Index Theologicus
John Henry Cardinal Newman, full text works

Louvain Studies (archives of journal)
NetLibrary 
New Testament Abstracts

Old Testament Abstracts
Online Medieval Sources Bibliography
Origins Online (searchable archive)

Oxford Biblical Studies 
Oxford English Dictionary
Oxford Language Dictionaries
Oxford Scholarship Online 

Patrologia Latina
Philosopher's Index
ProQuest Religion

Religious & Theological Abstracts
WorldCat

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http://www.biblicalstudies.org.uk/
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http://www.medievalchurch.org.uk/