Princeton University
The Charrette Project
An outstanding example of what can be done on the web around the editing of a medieval text (Chretien de Troyes's "Le Chevalier de la Charrette"). It includes a critical edition, variants, a modern French translation, manuscript...
British Library
British Library: Discovering Literature: The Legends of King Arthur
This article tracks the many appearances of King Arthur, from a 9th-century history to a Hollywood blockbuster, via the works of Chretien de Troyes, Thomas Malory, and the author of Sir Gawain and the Green Knight.
Other
Sherwood Times: Lancelot and Guinevere
An adapted version of a work by Chretien of Troyes that deals with the relationship between Lancelot and Guinevere.