Australian libraries

• Australia Libraries Gateway: access to the online catalogues of Australian libraries.
• Council of Australian University Libraries (CAUL): provides links to the sites of university libraries in Australia.
• Libraries Australia: provides access to combined holdings of major Australian libraries.
• National Library of Australia: the catalogue of Australia's leading public research library.
• State Library of New South Wales: the State Library's online catalogue.
• Trove: search a repository of Australian materials dating back to the nineteenth century.

National libraries

• British Library Public Catalogue: search the UK national library.
• BnF: The catalogue of the Bibliothèque nationale de France (BnF).
• Library and Archives Canada/Bibliothèque et Archives Canada
• Library of Congress: the major reference library in the United States.
• National Library of New Zealand/Te Puna Mātauranga o Aotearoa: the online catalogue of the National Library of New Zealand
• The European Library: a portal providing links to the sites of national libraries in Europe.
• Wikipedia: provides links to the catalogues of national libraries world-wide.

Other research libraries

• ARL: links to the sites of US research libraries.
• COPAC: provides combined access to the catalogues of major UK research libraries.
• Karlsruher Virtueller Katalog (KVK): search across the holdings of major German-language research libraries in Europe.
• Libdex: offers links to library catalogues by country.
• UK catalogue of serials: search the journal titles held in 75 UK research libraries.
• WorldCat: provides access to the holdings of hundreds of overseas libraries.