This research portal dedicated to the four Gaffurius Codices of the Veneranda Fabbrica del Duomo di Milano is maintained by the SNF Project Polifonia Sforzesca: The Motet Cycles in the Milanese Libroni between Liturgy, Devotion, and Ducal Patronage (Schola Cantorum Basiliensis FHNW, 2018–2020).

In its complete form, it will include a digital reproduction of the four manuscripts, their full inventory and catalogue, a digital critical edition of selected motet cycles, a set of monographic essays, and additional multimedia resources. Interlinked with other online reference works (notably the Motet Cycles Database), it is provided as an open-access research tool of interest not only to musicologists, but also to students and scholars in various disciplines: codicology, paleography, liturgy, Sforza studies, and medieval/early modern studies in general.