Cadmus is the EUI Research Repository. It contains EUI-members' academic publications issued during their time at the EUI and/or based on research carried out at the EUI. Cadmus also includes all publications from academic series sponsored by the EUI, such as working paper series and theses written by EUI researchers. As of 21 October 2019 Cadmus also contains datasets.

The EUI supports the principle of Open Access. Cadmus contains Open Access publications at an increasing proportion. Browse all Open Access publications in Cadmus.
Cadmus is built on DSpace, an open source software, and the metadata schema used is Dublin Core. The repository is OAI-PMH compliant and searchable worldwide.Therefore its publications are also searchable in, and harvested by, European and international networks and portals. Its content is also visible in Worldcat and in the EUI Library's discovery tool (Articles+).