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worldcat.org

WorldCat

Who runs WorldCat, what it tracks and what it costs, and the 20 closest library union catalog alternatives.

Who’s behind it
Not stated
Online since
Unknown
Trackers
Prices
No pricing page
Last price change
–
Closest alternative
Open Library

Measured from WorldCat’s own pages, the Internet Archive and public records. Hover a dotted value for its source and date.

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Visit WorldCat

01 · Who’s behind it

Who runs WorldCat

WorldCat worldcat.org

WorldCat.org is a global catalog of library materials. You can search for books, music, video, articles and much more at libraries near you.

Wikidata: international union library catalog

Company
No imprint we could read
Online since
Not in the Internet Archive
Audience
In English

02 · Privacy

What WorldCat tracks

What the homepage loads before you accept or decline cookies. A cookie banner should hold most of it back until you agree, and a tag manager can load more that we don’t see.

tracker that follows visitors

9 of the 14 alternatives below have fewer, 1 have more.

Privacy-friendly alternatives →
Cookie banner
OneTrust
US company
2 tools

03 · Alternatives

Alternatives to WorldCat

Fewer trackers than WorldCatNo ad trackersRegistered in the EUFree planOnly in English

None of the 60 sites closest to WorldCat match these filters. We read imprints and pricing pages once a week, so more sites qualify as we get to them.

04 · History

What changed

Price and policy history →

No changes yet. Each new crawl is compared with the last one, and what WorldCat adds, drops or rewrites shows up here.

05 · Details

How we measure

Alternatives are matched by what sites actually offer, from their homepages, Wikidata and a summary by Claude, in any language. Trackers and the rest of the stack come from the homepage’s code and DNS records.

The full technology stack and search numbers · 10 technologies
Neighbours
k = 60
Sites searched
9,217
Vector
384-d
Query
34 ms

Built with

CMS
JavaScript frameworks
  • Next.js page source: /_next/static/
  • React implied by Next.js (page source: /_next/static/)
Analytics
  • Cloudflare Web Analytics asset https://static.cloudflareinsights.com/beacon.min.js/vce701823e78c4301a35b7e07294d87301792…
Tag managers
Cookie consent
  • OneTrust page source: cdn.cookielaw.org
Monitoring
CDN
DNS hosting
SaaS tools (verified in DNS)