WorldCat

International union library catalog / From Wikipedia, the free encyclopedia

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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.[3] It is operated by OCLC, Inc.[4] Many of the OCLC member libraries collectively maintain WorldCat's database, the world's largest bibliographic database.[5] The database includes other information sources in addition to member library collections.[6] 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.

Quick facts: Type of site, Available in, Owner, URL, ...
WorldCat
Five-color WorldCat emblem, with WorldCat in black letters and OCLC in smaller grey letters
Screenshot
WorldCat_homepage.png
WorldCat homepage as of June 2019
Type of site
Network of library content and services
Available in13 languages[1]
List of languages
  • Chinese (Simplified)
  • Chinese (Traditional)
  • Czech
  • Dutch
  • English
  • French
  • German
  • Italian
  • Korean
  • Japanese
  • Portuguese
  • Spanish
  • Thai
  • Urdu
OwnerOCLC
URLwww.worldcat.org Edit this at Wikidata
CommercialNo
RegistrationOptional, but some features require registration (such as writing reviews and making lists or bibliographies)
LaunchedJanuary 21, 1998; 25 years ago (1998-01-21) (date of registry of the new domain name; the database already existed since 1971)[2]
Current statusOnline
Content license
Copyright policy
OCLC number756372754
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As of December 2021, WorldCat contained over 540 million bibliographic records in 483 languages, representing over 3 billion physical and digital library assets,[4] and the WorldCat persons dataset (mined from WorldCat) included over 100 million people.[7]

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