Regnum Francorum Online is about visualizing early medieval Europe 614-840 on maps. Here you will find interactive maps of the Frankish kingdom, activities of Merovingian and Carolingian kings, donations of the nobility and development of the property of monasteries and other institutions. It implements an interface which enable the user to view maps of different aspects of the Frankish kingdom 614 to 840. It also contains a database of cities, institutions, persons and personal names, connecting them to evidence in, and 50.000 quotes from, primary source-editions and contains editions of more than 700 source documents in full or part.

See http://www.francia.ahlfeldt.se/