The CANTUS database provides indices of chant manuscripts for the Office in both electronic and printed formats. The database was developed in the 1980s at the Catholic University of America under the leadership of Ruth Steiner. The goals and basic structure of the project remain true to the vision of its founder; however, since the move to Canada there have been some changes in format and presentation of the data. This progress report is the first official presentation of these alterations. Seventy-one liturgical books have been indexed. The centre of distribution is the project's website at http://publish.uwo.ca/~cantus/. The database consists of indices that indicate the actual contents of individual sources. The project has proven useful in a variety of fields including liturgical chant, early music, medieval liturgy, hagiography, and ecclesiastical history.