Catharism in the Languedoc, Cathar beliefs. Cathars and heretics, the high culture of the troubadours and the Counts of Toulouse. The Role of the Roman Catholic Church: Innocent III, Crusades (The Albigensian Crusade) and the annexation of the Languedoc http://www.languedoc-france.info/12_cathars.htm
Introductuion to the Cathar faith. The significance of events at Montsegur during the Cathar period, including the names, where known, of the Cathars burned alive there. References to primary source material. http://www.russianbooks.org/montsegur.htm
Cathar beliefs and their origins in Paulician and Bogomil ideas. Catharism treated as a heresy by the Roman Church. The Medieval Inquisition, including selected source documents. http://www.askwhy.co.uk/christianity/0811Inquisition.html
Description of the modern appeal of Cathar ideas. Extracts from a book about the Cathars (also called 'Cathar Eclipse') and extracts from an illustrated map of the Cathar Crusade. http://www.forrester-roberts.co.uk/cathars.html
Text from the Catholic Encyclopedia about what the Roman Catholic Church regards as a neo-Manichean sect: the Cathars who flourished in what is now southern France in the twelfth and thirteenth centuries. http://www.newadvent.org/cathen/01267e.htm