| Austria | |
| 1501-current | Austrian National Library |
| Belgium | |
| 1900-current | Royal Library of Belgium (Koninklijke Bibliotheek) |
| Classical Studies | |
| 1500-1981 | Catalogue Général des Livres Imprimés |
| Early English Materials | |
| 1500-1970 | British Museum General Catalogue of Printed Books |
| Europe | |
| 1500-current | Gabriel: Gateway to Europe's National Libraries |
| France | |
| 1500-1981 | Catalogue Général des Livres Imprimés |
| Great Britain | |
| 1500-1970 | British Museum General Catalogue of Printed Books |
| 1700-current | British Library Document Supply Centre |
| Latin America | |
| Latin American Network Information Center (LANIC) | |
| Medicine & Health | |
| 1948-1965 | National Library of Medicine Catalog |
| 1977- | National Library of Medicine Audiovisuals Catalog |
| Spain | |
| 1500-current | Automated Catalogue of the Biblioteca Nacional |
| Sweden | |
| 1700-1829 | Swedish Bibliography 1700-1829 |
| Switzerland | |
| 1895-current | Helveticat (Swiss National Library) |