OhioLINK
Shared catalog of the academic libraries of Ohio. Also provides access to databases and member information.
http://www.ohiolink.edu

Smithsonian Libraries and Archives
Gateway to the collections of the Smithsonian Institute.
http://www.sil.si.edu/

Library of Congress Online Catalog
Online access to the collections resident at the Library of Congress.
http://catalog.loc.gov/

LibraryLookup
Bookmarklets for looking up catalog records from book-related sites.
http://weblog.infoworld.com/udell/stories/2002/12/11/librarylookup.html

ILLINET Online
Illinois statewide resource sharing system and union catalog.
http://library.ilcso.illinois.edu/ilcso/cgi-bin/welcome

Metro Boston Library Network
Online catalogs in Eastern Massachusetts.
http://catalog.mbln.org/ipac20/ipac.jsp?profile=

Institute of Palestine Studies Library
The IPS-Library in Beirut is the largest library in the Arab world specializing in Palestinian affairs, Judaica, and the Arab-Israeli conflict. Site connects to the library's electronic catalog which is searchable in several ways.
http://library.palestine-studies.org/

SJCPL's Online Catalog
St. Joseph County Public Library's Online Catalog which contains over 500,000 records and includes the holdings of four area public libraries.
http://www.sjcpl.org/onlinecatalog/onlinecatalog.html

LibraryLink
Online union catalog of the various Filipiniana Libraries in the Philippines.
http://www.librarylink.org.ph

Penelitian Hukum Indonesia
Online access to the Indonesian regulations collections at Penelitian Hukum Indonesia. User ID and password required.
http://www.penelitianhukum.com/

The International CIPAC List
Card-image public access catalogues (CIPACs) are online library catalogues based on databases of digitised catalogue cards and more or less sophisticated mechanisms for browsing or searching. This page offers links to all known catalogues of this kind, arranged by countries.
http://www.ub.tuwien.ac.at/cipacs/c-i.html

Metafore2.ca - Metadata on Forestry in Canada
The Canadian Forest Service Library Network catalogue. In French, English and Spanish.
http://catalogue2.nrcan.gc.ca/html/Metafore2/English_MultiLIS/Metafore2.html

Worldcat
Meta search engine for online catalogs of libraries all over the world. Search for any book using a geographic location for the closest sources.
http://www.oclc.org/worldcat/

Atrium
Online catalog of University of Montreal. English and French version.
http://www-atrium.bib.umontreal.ca:8000/

Concordia University Libraries: CLUES Catalogue
Online catalog of Concordia University, Montreal, canada.
http://clues.concordia.ca/

The CAT iLink at The Pennsylvania State University
Online catalog of Pennsylvania State University
http://cat.libraries.psu.edu/uhtbin/cgisirsi/reUUAoYY8f/UP-PAT/137960368/60/26/X

CENTRA
Provides the online catalog for the Central Michigan University Libraries.
http://catalog.lib.cmich.edu/

Karlsruhe Virtual Catalog (KVK)
A service of Karlsruhe University Library. Gives access to books and serials in library and book trade catalogs worldwide.
http://www.ubka.uni-karlsruhe.de/hylib/en/kvk.html

MUSE
Online catalog of University of McGill, English and French version.
http://aleph.mcgill.ca/F/

NUcat
Online catalog of Northwestern University libraries
http://nucat.library.northwestern.edu/

Iris
Online catalog of Qubec national library (BANQ)
http://catalogue.banq.qc.ca/cgi-bin/bestn?id=%5FZjow%2F%E2%7Dt%2DJQNFwwdX&act=2&data=1

University of Tokyo OPAC
Online catalog (English version) of University of Tokyo
https://opac.dl.itc.u-tokyo.ac.jp/opac/basic-query-e?mode=2&key=