Capital Smart Library
- Single online search of several libraries in Ottawa; Ottawa Public, Carleton and Ottawa Universities, Canada Institute for Scientific and Technical Information, and the National Library. [English/French]
- http://search.smartlib-bibliogen.ca/zengine?VDXaction=ZSearchSimple

Ottawa Public Library
- Site offering information about the library services and access to the online catalogue.
- http://www.biblioottawalibrary.ca/

University of Ottawa Library Network
- Over 4.5 million items in its holdings in Arts & Sciences, Law and Health Sciences. Online catalogue, collection, databases, services and instruction information.
- http://www.biblio.uottawa.ca/index-e.php

National Library of Canada and National Archives of Canada
- The world's most comprehensive collection of information published in or about Canada.
- http://www.collectionscanada.ca/

Ottawa Public Library Foundation
- Fund-raising organization supporting OPL programs and services. Profile, news, donation information.
- http://www.foundationopl.ca/

Carleton University Library
- Contemporary materials and several special cultural and historical collections. Searchable listings, virtual tours, interlibrary, resources, research and operations information.
- http://www.library.carleton.ca/