Databases
 
Microfilm Archiv Würzburg Bruno Stäblein Archiv: Chant sources used in studies at the Institut für Musikwissenschaft at Erlangen-Nürnberg University
Aquileian and Regensburg Chant database Database of liturgical chants of the medieval Patriarchate of Aquileia
and the City of Regensburg (DFG research project, Universität Erlangen)
Offices of the Saints DFG research project "Die Gesänge der Heiligen-Offizien (Historiae) im Mittelalter"
Responsories for Advent Search facility for liturgical office books (R.-J. Hesbert / K. Ottosen)
Responsories for the Office of the Dead Search facility for liturgical office books (K. Ottosen)
Post-Pentecost Antiphons Search facility for series of post-Pentecost antiphons (D. Hiley)
Post-Pentecost Alleluias Search facility for series of post-Pentecost Alleluias (D. Hiley)
Post-Easter Alleluias Search facility for series of post-Easter Alleluias (P. Wittwer)
CAO search Search facility for the texts of office chants edited in R.-J. Hesbert's Corpus Antiphonalium Officii vols. 3+4
Chant Bibliography I. Western plainchant bibliography (D. Hiley)
Chant Bibliography II. new Liturgical Chant Bibliography (G.M. Paucker, P. Jeffery and T. Kohlhase)
Liturgical manuscripts in British libraries Basic information about ~4400 liturgical books (D. Hiley)
Liturgical manuscripts in German libraries Basic information about ~10000 liturgical books (K. Thomayer)
Breviaries in French libraries Basic information about ~1000 breviaries (V. Leroquais)
Cantus Augusta Office chants of the monastery St. Ulrich & Afra and the cathedral church Augsburg (R. Klugseder)
Monumenti vaticani Search facility for medieval notation systems edited in H. M. Bannister's "Monumenti vaticani di paleografia musicale latina". Additional basic information about ~1000 Musicalia of the Vaticana (R. Klugseder)