Cross-searchable database of books, articles and reviews, which contribute to the study of Gnosticism and early Christianity.

Offers unrivalled coverage of medieval Church prelates, information on all 1300 medieval bishoprics, archdioceses and patriarchates under obedience to Rome. As of 2003, it provides prosopographical information on 18,507 bishops, archbishops and patriarchs.

The Monastic Matrix is an ongoing collaborative effort by an international group of scholars of medieval history, religion, history of art, archaeology and other disciplines, as well as librarians and experts in computer technology to document the participation of Christian women in the religion and society of medieval Europe. In particular, to collect and make available all existing data about all professional Christian women in Europe between 400 and 1600 C.E.

A database documenting the careers of all Church of England clergymen between 1540 and 1835. This website not only gives access to the Database, but also provides a range of supporting materials about the Church and its clergy.