The Tertullian Project 
Information about this second-century church father, his works, lost works, manuscripts.
http://www.tertullian.org/Catholic Encyclopedia: Tertullian
Long article on this ecclesiastical writer.
http://www.newadvent.org/cathen/14520c.htm
The Ecole Glossary: Tertullian
Brief biography, by Elise M. Bender.
http://www2.evansville.edu/ecoleweb/glossary/tertullian.html
Tertullianus, Quintus Septimius Florens
Extensive entry on Tertullian encompasses his life and theological notions, and includes outlines of his tracts. From the Early Christian Writings.
http://www.earlychristianwritings.com/info/tertullian-wace.html
The Development of the Canon of the New Testament: Tertullian of Carthage
Tertullian's citations of New Testament writings and other related works.
http://www.ntcanon.org/Tertullian.shtml
Excerpts from Tertullian
Comprehensive collection of citations from the Carthaginian writer, arranged by topics and subtopics.
http://www.geocities.com/tertulliancyprian/
Early Church.org.uk: Tertullian of Carthage
Overview of Tertullian's contributions, methods of exegesis, rhetoric, anti-intellectualism, and Montanism. Includes sources.
http://www.earlychurch.org.uk/tertullian.php
Tertullian On Fasting
Survey on individual, communal, and stational fasts in Tertullian's Carthaginian community.
http://people.vanderbilt.edu/~james.p.burns/chroma/practices/fastmcgowan.htm
