|bibliotek.dk (Denmark)||Contains holdings of Danish public and research libraries and records for all Danish publications. English and Danish interfaces.|
|Catalogue Collectif de France (France)||Includes holdings from the BnF catalogue, SUDOC (academic & research libraries), Base Patrimoine (heritage collections), Base Manuscrits (manuscripts), municipal libraries and Rachel (Judaica and Hebraica libraries in Europe). French interface.|
|CiNii Books | CiNii Articles (Japan)||CiNii Books includes holdings from Japanese university libraries. CiNii Articles includes academic articles published by academic societies or universities. English and Japanese interfaces.|
|Copac (United Kingdom & Ireland)||
Includes over 100 academic, national and specialist catalogues in the United Kingdom and Ireland.
|The European Library||Searches all of Europe's national libraries and leading European research libraries.|
|GVK-GBV Union Catalogue (Germany)||
Union Catalogue (GVK) of seven German federal states and the Foundation of Prussian Cultural Heritage participating in the Common Library Network (GBV).
|Media Catalog (Canada)||Search audiovisual materials in selected Ontario universities|
|Ontario Colleges Library Catalogue (Canada)||Library holdings for publicly-funded community colleges in Ontario.|
|RACER (Rapid Access to Collections by Electronic Requesting) (Canada)||Search Ontario university library catalogues and more.|
|Trove (Australia)||Includes holdings from state, territory, public and university libraries, research repositories, cultural institutions, and industry organizations in Australia.|
|Voilà (Canada)||National Union Catalogue of Canada, providing access to the collections of libraries across Canada.|
|International union catalogue of research libraries, owned and operated by OCLC (Online Computer Library Center). Contains billions of items in more than 10,000 libraries worldwide. NOTE: McMaster WorldCat highlights McMaster library holdings in the search results.|
|World Digital Library||Includes books, photographs, maps, recordings and other online materials from over 120 institutions around the world.|