Monasterium is a collaborative digital archive containing charters and documents from over 2000 repositories across 17 European countries. The site can be used in 14 different languages. Not limited solely to documents of the Middle Ages, Monasterium brings together over 775,000 digital documents. After registering for a free account, users are able to interact with images of the archival documents, sharing comments on the platform. In order to join the archive, repositories must agree to metadata standards to ensure cohesion across collections. Monasterium is maintained by ICARUS, the International Centre for Archival Research.
