The EFR library's collections are integrated into the French university collective catalog SUDOC.

The EFR library's collection is also integrated into URBiS, a network that connects the catalogs of the main International Institutes' libraries in Rome.

Archives and manuscripts catalog of the Enseignement supérieur (French higher education institutions). EFR library's manuscripts and graphic documents are here referenced.

Catalog of periodicals in the collections of Italian libraries.

Collective catalog of the National Library Service of Italy, the network of italian libraries.

URBE (Unione Romana Biblioteche Ecclesiastiche) is the network that brings together the libraries of pontifical universities and academic institutions.