- E.L. Skip Knox, The Crusades, a virtual college course through Boise State University.
- Paul Crawford, Crusades: A Guide to Online Resources, 1999.
- Thomas F. Madden, The Real History of the Crusades, an essay by a Crusades historian
- The Society for the Study of the Crusades and the Latin East—an international organization of professional Crusade scholars
- De Re Militari: The Society for Medieval Military History—contains articles and primary sources related to the Crusades
- Resources > Medieval Jewish History > The Crusades The Jewish History Resource Center - Project of the Dinur Center for Research in Jewish History, The Hebrew University of Jerusalem
- The Crusades Encyclopedia - articles, primary and secondary sources, and bibliographies
- An Islamic View of the Battlefieldan article that provides indepth analysis of the theological basis of human wars
- A History of the Crusades
- The Crusades Wiki
-
