Dante Dartmouth Project: Full text of more than 70 Italian, Latin, and English commentaries on the Commedia, ranging in date from 1322 (Iacopo Alighieri) to the 2000s (Robert Hollander)
World of Dante Multimedia website that offers Italian text of Divine Comedy, Allen Mandelbaum's translation, gallery, interactive maps, timeline, musical recordings, and searchable database for students and teachers by Deborah Parker and IATH (Institute for Advanced Technologies in the Humanities) of the University of Virginia
Danteworlds, multimedia presentation of the Divine Comedy for students by Guy Raffa of the University of Texas
Dante's Places: a map (still a prototype) of the places named by Dante in the Commedia, created with GoogleMaps. Explanatory PDF is available for download