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.
Visit WorldCat01 · 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
Tag manager
Loads further tracking scripts, which we can’t always see.
Privacy-friendly analytics
Counts visits without cookies or personal profiles.
03 · Alternatives
Alternatives to WorldCat
Thumbs up if it’s a real alternative to WorldCat, thumbs down if it isn’t.
20 of the 60 sites closest to WorldCat match.
- 01
OpenAlex: The open catalog to the global research system
OpenAlex indexes half a billion scholarly works, with their authors, institutions, sources and topics, and makes them free to search, analyze and reuse through our web app, API and bulk download.
Very close - 02
global library cooperative
Very close - 03
Client Challenge
distributor of eBooks and other digital media
Very close - 04
LibriVox | free public domain audiobooks
public domain audiobook project
Very close - 05
Wikibooks
free multilingual online collection of textbooks
Very close - 06
Making sure you're not a bot!
legal database
Close - 07
Free eBooks | Project Gutenberg
Project Gutenberg is a library of over 75,000 free eBooks. Choose from ebook formats or read online. No fees, no registration, no ads.
Close - 08
Home | LibreTexts
open access educational resource collection
Close - 09
Wikisource
online multilingual library that collects open-content source material
Close - 10
Wikiquote
free multilingual online collection of quotes
Close - 11
PostgreSQL: The world's most advanced open source database
The official site for PostgreSQL, the world's most advanced open source database
Close - 12
MusicBrainz - the open music encyclopedia
online music metadata database
Close - 13
Internet Archive: Digital Library of Free & Borrowable Texts, Movies, Music & Wayback Machine
U.S. non-profit organization and digital archive
Very close - 14
Wikiversity
online multilingual collaborative project for learning materials
Close - 15
OpenStax
OpenStax offers free college textbooks for all types of students, making education accessible & affordable for everyone. Browse our list of available subjects!
Close - 16
Welcome | IZA - Institute of Labor Economics
Welcome to the IZA@LISER Network website
Close - 17
Wikipedia
Wikipedia is a free online encyclopedia, created and edited by volunteers around the world and hosted by the Wikimedia Foundation.
Close - 18
Lodash
A JavaScript utility library delivering consistency, modularity, performance, & extras.
Close - 19
Standard Ebooks: Free and liberated ebooks, carefully produced for the true book lover
Free and liberated ebooks, carefully produced for the true book lover. Download free ebooks with professional-quality formatting and typography, in formats compatible with your ereader.
Close - 20
Wikidata
free multilingual online knowledge graph
Close
Closest first, by how much each site’s offer resembles WorldCat’s. Trackers are counted the same way as above. Highlighted technologies are ones WorldCat uses too. Votes and comments come from visitors and don’t change the order.
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, the competitor map and search numbers · 10 technologies
- Neighbours
- k = 60
- Sites searched
- 9,217
- Vector
- 384-d
- Query
- 40 ms
Competitor map
Each alternative by how close its vector is to WorldCat’s (x) and how much traffic it gets, how much of the stack it shares, or where it sits in the embedding space itself (y). Hover for the numbers, click to jump to it in the list.
similarity × popularity
Built with
- CMS
- Adobe Experience Manager page source: /content/dam/ext-ref/
- JavaScript frameworks
- Analytics
- Cloudflare Web Analytics asset https://static.cloudflareinsights.com/beacon.min.js/vce701823e78c4301a35b7e07294d87301792…
- Tag managers
- Google Tag Manager page source: googletagmanager.com/gtm.js
- Cookie consent
- OneTrust page source: cdn.cookielaw.org
- Monitoring
- New Relic page source: NREUM
- CDN
- Cloudflare header cf-ray: a56312837b1c08a1-HAM
- DNS hosting
- Cloudflare DNS NS nico.ns.cloudflare.com
- SaaS tools (verified in DNS)
- Meta Business Suite TXT facebook-domain-verification=ct6p8jbb66z6nu28qz4817jrz0ed1a
What competitors use
Across the 20 closest sites.
- Google Search Console · not on worldcat.org 16/20
- Cloudflare 9/20
- Google Workspace · not on worldcat.org 9/20
- Cloudflare DNS 6/20
- Microsoft 365 · not on worldcat.org 6/20
- jQuery · not on worldcat.org 5/20
- Meta Business Suite 4/20
- Apache HTTP Server · not on worldcat.org 4/20
- Zendesk · not on worldcat.org 3/20
- Atlassian · not on worldcat.org 3/20
- Amazon Route 53 · not on worldcat.org 3/20
- PHP · not on worldcat.org 3/20
- Bing Webmaster Tools · not on worldcat.org 2/20
- Matomo · not on worldcat.org 2/20
- nginx · not on worldcat.org 2/20
- Google Fonts · not on worldcat.org 2/20