| Microfilm Archiv Würzburg | Bruno Stäblein Archiv: Chant sources used in studies at the Institut für Musikwissenschaft at Erlangen-Nürnberg University (D. Hiley) |
| 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, ed. R. Klugseder) |
| Offices of the Saints | DFG research project "Die Gesänge der Heiligen-Offizien (Historiae) im Mittelalter" (D. Hiley) |
| Responsories for Advent | Search facility for liturgical office books (R.-J. Hesbert / K. Ottosen, ed. R. Klugseder) |
| Responsories for the Office of the Dead | Search facility for liturgical office books (K. Ottosen, ed. R. Klugseder) |
| Post-Pentecost Antiphons | Search facility for series of post-Pentecost antiphons (D. Hiley, ed. R. Klugseder) |
| Post-Easter Alleluias | Search facility for series of post-Easter alleluias (P. Wittwer, ed. R. Klugseder) new |
| Post-Pentecost Alleluias | Search facility for series of post-Pentecost Alleluias (D. Hiley, ed. R. Klugseder) |
| CAO search | Search facility for the texts of office chants edited in R.-J. Hesbert's Corpus Antiphonalium Officii vols. 3+4 (D. Hiley) |
| Chant Bibliography I. | Western plainchant bibliography (D. Hiley) |
| Chant Bibliography II. | Liturgical Chant Bibliography (G.M. Paucker, P. Jeffery and T. Kohlhase, ed. R. Klugseder) |
| 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, D. Hiley) |
| 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) |