Study of Christianity on the Web
Texts and Translations
Christian Classics Ethereal Library
Gnosis Archive: Resources on Gnosticism and Gnostic Tradition
Internet Medieval Sourcebook: Full Text Resources
Perseus Digital Library: Sources for the Study of Ancient Greece and Rome
Wesley Center Online: Non-Canonical Literature
Bibliographies and Search Engines
Biblindex: Index of Biblical Quotations and Allusions in Early Christian Literature
Bibliothèque de l'Université Laval: Bibliographic Information Base in Patristics
Dumbarton Oaks Hagiography Database
Index theologicus: Zeitschrifteninhaltsdienst Theologie der Universitätsbibliothek Tübingen
General
Byzantium: Byzantine Studies on the Internet
NetSERF: The Internet Connection for Medieval Resources
New Advent: Catholic Encyclopedia, Summa Theologica, Church Fathers
Resource Pages for Biblical Studies
St. Pachomius Library: A Living Encyclopaedia of Orthodox Christianity