Gnostic Society Library

A collection of materials dealing with Gnosis and Gnosticism, both ancient and modern. Includes the Nag Hammadi Library.
http://www.gnosis.org/library.html

Christian Classics Ethereal Library

Numerous classical Christian texts in electronic format, sponsored by Calvin College.
http://ccel.org/

ICL Guide to Early Church Documents

Includes canonical literature, and creeds. Hosted by the Institute for Christian Leadership.
http://www.iclnet.org/pub/resources/christian-history.html

Early Christian Writings

Information and translations for the New Testament, Apocrypha, Gnostics, Church Fathers, Gnostic Gospels, Pseudepigrapha Epistles, Apocryphal Acts, and documents of early Christianity like the Gospel of St. Thomas.
http://www.earlychristianwritings.com/

Fathers of the Church

An extensive compilation of councils, synods, canons, and writings of the Fathers.
http://www.newadvent.org/fathers/

Early Church.org.uk

Resource for students of early Church history. Includes articles, detailed bibliographies, and images of church fathers.
http://www.earlychurch.org.uk

On-Line Texts Related to Biblical Study

Online primary literature for the study of Judaism and Christianity.
http://ccat.sas.upenn.edu/~humm/Resources/Texts/bibTexts.html

Apocryphal New Testament Writings

List, with bibliography and links.
http://www.ntcanon.org/writings.shtml

Jewish Roots of Eastern Christian Mysticism

Research seminar investigates the influence of Jewish pseudepigrapha, Markabah and Hekhaloth writings and Enochic tradition on the eastern Christian texts.
http://www.marquette.edu/maqom

The Whole Bible: Analysis of the Canonical and Apocryphal Scriptures

Information on apocryphal gospels, acts, epistles, and apocalypses.
http://www.maplenet.net/~trowbridge/contents.htm

Ante-Nicene Christianity

Includes writings of some Apostolic fathers, and some topical collections of beliefs on issues.
http://www.geocities.com/hippolytus12001

Noncanonical Homepage

English translations for acts, gospels, epistles, pseudepigrapha, and other apocrypha of the Old and New Testament.
http://wesley.nnu.edu/biblical_studies/noncanon

Egeria: Translation

Egeria's Description of the Liturgical Year in Jerusalem: Translation
http://users.ox.ac.uk/~mikef/durham/egeria.html

St. Pachomius Library

Virtual encyclopedia of Orthodox Christianity. Emphasis on the early Church. Articles on important writers. Their works available online. Links.
http://www.voskrese.info/spl/index.html