The research and editing project Controversia et Confessio documents the theological disputes that broke out after the promulgation of the Augsburg Interim from 1548 and its conceptual alternative, the Leipzig Interim.

Contrary to the print version the online database offers a complete bibliographical documentation of the project. This includes more than 2000 records with full title, information on authorship, printing locations and printer, years of publication and current library locations, scans of the title page and frequently also summaries of the content.