| commercial = No| type = Network of library content and services| registration = Optional, but some features require registration (such as writing reviews and making lists or bibliographies)

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Thai|Urdu}}| language_count = 13

WEBSITE=WORLDCAT

OCLC>ACCESS-DATE=2017-03-29

ARCHIVE-URL=HTTPS://WEB.ARCHIVE.ORG/WEB/20070922180208/HTTPS://WWW.WORLDCAT.ORG/ACCOUNT/?PAGE=SEARCHITEMS, live, | num_users =| content_license = Copyright policy| programming_language =| owner = OCLC

domain name; the database has existed since 1971)1998 is the date of registry of the WorldCat.org domain; see: HTTP://WHOIS.DOMAINTOOLS.COM/WORLDCAT.ORG>TITLE=WORLDCAT.ORG WHOIS, DNS, & DOMAIN INFO â€“ DOMAINTOOLS

WHOIS>ACCESS-DATE=2017-01-21

ARCHIVE-URL=HTTPS://WEB.ARCHIVE.ORG/WEB/20190620011555/HTTP://WHOIS.DOMAINTOOLS.COM/WORLDCAT.ORG

WORK=WHOIS

ARCHIVE-DATE=JUNE 26, 2019

URL-STATUS=LIVE, | issn = | oclc = 756372754| current_status = Online}}WorldCat is a union catalog that itemizes the collections of tens of thousands of institutions (mostly libraries), in many countries, that are current or past members of the OCLC global cooperative.The 2012â€“2013 OCLC Annual Report noted that the number of "participating libraries (includes active and inactive symbols)" was 78,985: REPORT,weblink 2012â€“2013 OCLC Annual Report, 5, 1226313226, 2022-03-10, It is operated by OCLC, Inc.WEB, Inside WorldCat,weblink OCLC, 19 June 2021, January 30, 2017,weblink live, Many of the OCLC member libraries collectively maintain WorldCat's database, the world's largest bibliographic database.BOOK, Oswald, Godfrey, 2017, Largest unified international library catalog, Library world records, 3rd, Jefferson, NC, McFarland & Company, 291, 9781476667775, 959650095,weblink The database includes other information sources in addition to member library collections.WEB, Content available through WorldCat Discovery,weblink XLS, en, OCLC, 2020-09-22, September 22, 2020,weblink live, OCLC makes WorldCat itself available free to libraries, but the catalog is the foundation for other subscription OCLC services (such as resource sharing and collection management). WorldCat is used by librarians for cataloging and research and by the general public.{{As of|December 2021}}, WorldCat contained over 540 million bibliographic records in 483 languages, representing over 3 billion physical and digital library assets, and the WorldCat persons dataset (mined from WorldCat) included over 100 million people.WEB, Data strategy [WorldCat], oclc.org,weblink weblink 2019-03-27, 2018-02-11,

{{anchor|Identifier}}History

OCLC was founded in 1967 under the leadership of Fred Kilgour.NEWS, Margalit Fox, Frederick G. Kilgour, Innovative Librarian, Dies at 92,weblink Frederick G. Kilgour, a distinguished librarian who nearly 40 years ago transformed a consortium of Ohio libraries into what is now the largest library cooperative in the world, making the catalogs of thousands of libraries around the globe instantly accessible to far-flung patrons, died on Monday in Chapel Hill, N.C. He was 92., The New York Times, August 2, 2006, 2009-12-22, Margalit Fox, April 25, 2009,weblink" title="web.archive.org/web/20090425035646weblink">weblink live, That same year, OCLC began to develop the union catalog technology that would later evolve into WorldCat; the first catalog records were added in 1971.WEB,weblink A brief history of WorldCat, February 10, 2015, oclc.org, February 13, 2014, March 18, 2013,weblink" title="web.archive.org/web/20130318100413weblink">weblink live, In 2003, OCLC began the "Open WorldCat" pilot program, making abbreviated records from a subset of WorldCat available to partner web sites and booksellers, to increase the accessibility of its subscribing member libraries' collections.JOURNAL, O'Neill, Nancy, Novâ€“Dec 2004, Open WorldCat Pilot: A User's Perspective, Searcher, en, 12, 10, 54â€“60, 201889986, 1070-4795, WEB, Quint, Barbara, October 27, 2003, OCLC project opens WorldCat records to Google,weblink infotoday.com, Information Today, 2019-06-26, April 11, 2015,weblink" title="web.archive.org/web/20150411194752weblink">weblink live, In October 2005, the OCLC technical staff began a wiki project, WikiD, allowing readers to add commentary and structured-field information associated with any WorldCat record.WEB,weblink WikiD, OCLC, en-US, March 5, 2015, September 12, 2012,weblink" title="web.archive.org/web/20120912070425weblink">weblink live, WikiD was later phased out, although WorldCat later incorporated user-generated content in other ways.JOURNAL,weblink A WorldCat community: using WorldCat.org to build a social network of the world's library users, Storey, Tom, September 2007, NextSpace, 2019-06-26, OCLC, 7, 16â€“17, 1559-0011, Online ratings, tags, reviews, recommendations, lists, rankings, personal profilesâ€”the social media revolution is here. It seems the world has exploded with Web 2.0, social networking tools and sites., August 8, 2019,weblink live, JOURNAL, Bertot, John Carlo, Berube, Katy, Devereaux, Peter, Dhakal, Kerry, Powers, Stephen, Ray, Jennie, April 2012, Assessing the usability of WorldCat Local: findings and considerations, The Library Quarterly, 82, 2, 207â€“221, 10.1086/664588, 10.1086/664588, 61287720, Breeding [2] also makes the following observations about the benefits of the search system: the presence of a more visually appealing interface; the grouping of related material; faceted navigation; and the capability for user-generated content (e.g., reviews). Eden [3] also refers to the advantages of user-generated content possible in WCL..., In 2006, it became possible for anyone to search WorldCat directly at its open website WorldCat.org,WEB, Hane, Paula J., July 17, 2006, OCLC to open WorldCat searching to the world,weblink infotoday.com, Information Today, 2019-06-26, May 10, 2020,weblink" title="web.archive.org/web/20200510194419weblink">weblink live, not only through the subscription FirstSearch interface where it had been available on the web to subscribing libraries for more than a decade before.BOOK, Prucha, Francis Paul, 1994, National online library catalogs, Handbook for research in American history: a guide to bibliographies and other reference works, 2nd, Lincoln, University of Nebraska Press, 25â€“27, 0803237014, 28018047, Online Computer Library Center has developed two new programs. One is called EPIC, a new command-driven full online service with sophisticated searching features, including subject searches, intended for librarians and other experienced users. The other, designed for end-users, is FirstSearch, which contains the database materials found in EPIC or subsets of them but has a menu interface that nonspecialists find easy to use. Both EPIC and FirstSearch make available the full OCLC Online Union Catalog (called WorldCat in FirstSearch), but they also function as online database services, offering their users a wide array of other databases., Options for more sophisticated searches of WorldCat have remained available through the FirstSearch interface.In 2007, WorldCat Identities began providing pages for 20 million "identities", which are metadata about namesâ€”predominantly authors and persons who are the subjects of published titles.JOURNAL,weblink WorldCat Identities: Another View of the Catalog, Hickey, Thomas B., April 15, 2007, NextSpace, 2016-01-18, OCLC, 6, 18â€“19, 1559-0011, October 17, 2015,weblink" title="web.archive.org/web/20151017161919weblink">weblink live, In 2017, OCLC's WorldCat Search API was integrated into the cite tool of Wikipedia's VisualEditor, allowing Wikipedia editors to cite sources from WorldCat easily.WEB, OCLC and Wikipedia Library link citations to millions of library materials, expanding access to quality sources,weblink May 11, 2017, OCLC, oclc.org, April 25, 2020,weblink" title="web.archive.org/web/20171209200200weblink">weblink December 9, 2017, WEB, Orlowitz, Jake, May 11, 2017, You can now add automatically generated citations to millions of books on Wikipedia,weblink blog.wikimedia.org, Wikimedia Foundation, April 25, 2020, May 23, 2020,weblink live, Beginning in 2017, OCLC and the Internet Archive have collaborated to make the Internet Archive's records of digitized books available in WorldCat.WEB, Michalko, Jim, October 12, 2017, Syncing Catalogs with thousands of Libraries in 120 Countries through OCLC,weblink Internet Archive Blogs, 2020-07-18, In May 2022, OCLC announced WorldCat Entities, a new infrastructure for library linked data.WEB, Price, Gary, May 24, 2022, OCLC releases more than 150 million WorldCat Entities as the foundation of a linked data infrastructure, InfoDocket,weblink March 25, 2023, March 25, 2023,weblink live, WEB, Find WorldCat Entities to improve resource discoverability through connections, OCLC,weblink 2023-03-25, live,weblink 2022-05-24, Maintenance of WorldCat Identities was suspended and the service will be discontinued as it is being replaced by WorldCat Entities.WEB, WorldCat Identities, OCLC, March 9, 2023,weblink 2023-03-15, The research prototype application is no longer supported or maintained ... We have taken the findings of the research effort and used them to start to build the WorldCat Entities data. These new Entities and their persistent URIs will serve as the foundation for future linked data services similar to those explored in the Identities Research work., March 25, 2023,weblink live, In August 2022, OCLC launched a "redesigned and reimagined" WorldCat.org website with the stated goal "to offer greater accessibility to the collections".WEB,weblink Gary, Price, OCLC Officially Announces the Launch of a 'Redesigned and Reimagined' WorldCat.org, InfoDocket, 2022-08-24, 2022-08-29, August 29, 2022,weblink live, The website now requires the use of JavaScript and is therefore no longer accessible for users of older web browsers or those that have (:MW:No-JavaScript notes|JavaScript disabled) for security reasons. The update also removed users' book reviews and replaced them with reviews from Amazon subsidiary GoodReads.WEB,weblink Frequently Asked Questions, WorldCat, 2022-08-29, August 29, 2022,weblink live, In 2023, Anna's Archive scraped and began distributing the whole WorldCat database and was subsequently sued by OCLC in January 2024.WEB, Van der Sar, Ernesto, 2024-02-07, Lawsuit Accuses Anna's Archive of Hacking WorldCat, Stealing 2.2 TB Data,weblink TorrentFreak, 2024-03-17, en,

System architecture

Local catalogs of many OCLC member libraries are intermittently synchronized with the WorldCat database.WEB, About data sync collections,weblink en, OCLC Support, April 14, 2017, 2021-06-18, June 18, 2021,weblink live, WorldCat allows participating institutions to add direct links from WorldCat to their own local catalog entries for particular items, which enables the user to click through to the local catalog to quickly determine an item's real-time status (for example, whether or not it is checked out).WEB, What is WorldCat?, worldcat.org, 2015-02-13,weblink November 14, 2019,weblink dead, In a small percentage of libraries,WEB, April 25, 2020, Schonfeld, Roger C., What are the larger implications of Ex Libris buying Innovative?,weblink Ithaka S+R, 2019-12-05, OCLC's WorldShare cloud system has yet to achieve critical mass, amounting to 10% of the academic market (but only 4% of Association of Research Libraries, ARL), and OCLC's entire public library business represents just 10% of the public library market., June 12, 2020,weblink live, For another source of statistics on library system market share, see: WEB, Marketshare Report,weblink Library Technology Guides, June 18, 2021, July 28, 2021,weblink live, the local catalog is also run by OCLC using an integrated library system called WorldCat Discovery and WorldShare Management Services.JOURNAL, Breeding, Marshall, March 2014, OCLC announces WorldCat Discovery service, Smart Libraries Newsletter, 34, 3, 6â€“7,weblink Library Technology Guides, American Library Association, 1541-8820, June 18, 2021, June 18, 2021,weblink live, Library contributions to WorldCat are made via the Connexion computer program,WEB, Connexion â€“ Features,weblink en, OCLC, 2021-06-18, June 24, 2021,weblink live, which was introduced in 2001; its predecessor, OCLC Passport, was phased out in May 2005.MAILING LIST, Dean, Becky, OCLC Authorities migration timeline, bibco@listserv.loc.gov, March 3, 2005,weblink 2019-06-26, Cataloging librarians may also use the WorldShare Record ManagerWEB, WorldShare Record Manager: Record-at-a-time cataloging service,weblink en, www.oclc.org, April 2, 2021, OCLC, 2021-06-18, June 24, 2021,weblink live, or WorldCat Metadata APIWEB, WorldCat Metadata API {{!, OCLC Developer Network |url=https://www.oclc.org/developer/develop/web-services/worldcat-metadata-api.en.html |language=en |publisher=OCLC |access-date=2021-06-18 |archive-date=June 5, 2021 |archive-url=https://web.archive.org/web/20210605095010weblink |url-status=live }} for similar purposes.WEB, OCLC cataloging application comparison,weblink en, OCLC, 2021-06-18, June 18, 2021,weblink live,

References

External links

{{Official website}}
WEB, WorldCat,weblink oclc.org, 2018-12-31, Information on the OCLC website about WorldCat.
WEB, Bibliographic Formats and Standards,weblink oclc.org, 2018-12-31,
WEB, WorldCat Identities,weblink worldcat.org, 2018-12-31,

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{{anchor|Identifier}}History

System architecture

See also

References

Further reading

External links