Crossref

01 · Who’s behind it

Who runs Crossref

Crossref crossref.org

Crossref is open infrastructure linking the world's research. 26,500 members, 171 countries, 2.1 billion monthly API queries.

Wikidata: one of the official Digital Object Identifier Registration Agencies of the International DOI Foundation

Company

No imprint we could read

Online since

Not in the Internet Archive

Audience

Top 10K In English

02 · Privacy

What Crossref 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.

20 of the 60 sites closest to Crossref match.

1. 01
   DataCite datacite.org English No trackers

   DataCite – Connecting Research, Advancing Knowledge - DataCite

   international not-for-profit organization which aims to improve data citation

   • Bootstrap
   • cdnjs
   • Font Awesome
   • Google Workspace
   • jQuery
   • jsDelivr

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2. 02
   ORCID orcid.org Top 10K English No trackers

   ORCID

   non-profit organization that issues ORCID Identifiers

   • Amazon Web Services
   • Google Workspace
   • Microsoft 365
   • Zendesk
   • Apple Business
   • Cloudflare

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3. 03
   DOI.org query endpoint doi.org Top 1K English No trackers

   Home Page

   API endpoint

   • Amazon SES
   • Bootstrap
   • Amazon CloudFront
   • Font Awesome
   • jQuery
   • jsDelivr

   0 say DOI.org query endpoint is a good alternative to Crossref 0 say DOI.org query endpoint isn’t a real alternative to Crossref

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4. 04
   OpenAlex openalex.org English No trackers

   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.

   • Google Workspace
   • Zendesk
   • Cloudflare
   • Cloudflare DNS
   • Google Fonts
   • Google Search Console

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5. 05
   ICANN icann.org Top 10K English No trackers

   Internet Corporation for Assigned Names and Numbers (ICANN)

   ICANN’s mission is to help ensure a stable, secure, and unified global Internet.

   • Angular
   • AngularJS
   • Atlassian
   • Cloudflare
   • Cloudflare Web Analytics
   • Google Search Console

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6. 06
   w3id.org English No trackers

   w3id.org - Permanent Identifiers for the Web

   Secure, permanent URLs for your Web application that will stand the test of time.

   • Apache HTTP Server

   0 say w3id.org is a good alternative to Crossref 0 say w3id.org isn’t a real alternative to Crossref

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7. 07
   inria.fr Top 10K English No trackers

   Making sure you're not a bot!

   French research institution in computer science

   • Apple Business

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8. 08
   OCLC oclc.org Top 10K English No trackers

   global library cooperative

   • Microsoft 365
   • Apple Business
   • Canva
   • Cloudflare
   • Google Search Console
   • Meta Business Suite

   0 say OCLC is a good alternative to Crossref 0 say OCLC isn’t a real alternative to Crossref

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9. 09
   OpenStack openstack.org English No trackers

   Open Source Cloud Computing Infrastructure - OpenStack

   Deployed by thousands. Proven production at scale. OpenStack is a set of software components that provide common services for cloud infrastructure.

   • Google Workspace
   • Zendesk
   • Adobe Experience Manager
   • Astro
   • Cloudflare
   • Cloudflare DNS

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10. 10
    Liberapay liberapay.com English No trackers

    Liberapay

    We help you fund the creators and projects you appreciate.

    • Bootstrap
    • jQuery
    • Cloudflare
    • Cloudflare DNS
    • Google Search Console

    0 say Liberapay is a good alternative to Crossref 0 say Liberapay isn’t a real alternative to Crossref

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11. 11
    Internet Archive archive.org Top 1K English No trackers

    Internet Archive: Digital Library of Free & Borrowable Texts, Movies, Music & Wayback Machine

    U.S. non-profit organization and digital archive

    • Google Workspace
    • Microsoft 365
    • Atlassian
    • Google Search Console
    • nginx
    • Salesforce

    0 say Internet Archive is a good alternative to Crossref 0 say Internet Archive isn’t a real alternative to Crossref

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12. 12
    ClinicalTrials.gov clinicaltrials.gov Top 10K English No trackers

    ClinicalTrials.gov

    United States government registry of clinical trials

    • Google Cloud
    • Google Cloud DNS
    • Google Fonts
    • Google Search Console

    0 say ClinicalTrials.gov is a good alternative to Crossref 0 say ClinicalTrials.gov isn’t a real alternative to Crossref

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13. 13
    United States Patent and Trademark Office uspto.gov Top 10K English No trackers

    United States Patent and Trademark Office

    Home page of the United States Patent and Trademark Office's main web site.

    • Amazon CloudFront
    • Font Awesome
    • jQuery
    • Microsoft 365
    • Adobe
    • Apache HTTP Server

    0 say United States Patent and Trademark Office is a good alternative to Crossref 0 say United States Patent and Trademark Office isn’t a real alternative to Crossref

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14. 14
    Grants.gov grants.gov English No trackers

    Home | Grants.gov

    USA federal website

    • cdnjs
    • Amazon CloudFront
    • Microsoft 365
    • Google Search Console
    • Nuxt
    • Vue.js

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15. 15
    SURF surf.nl English No trackers

    SURF is the collaborative organisation for IT in Dutch education and research | SURF.nl

    More than 100 education and research institutions in the Netherlands work together in the SURF cooperative to fully utilise the opportunities of digitalisation. Our goal: improved and more flexible education and research.

    • Microsoft 365
    • Zendesk
    • Adobe
    • Apple Business
    • Drupal
    • Google Search Console

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16. 16
    DFN dfn.de Top 10K English No trackers

    Home - DFN

    German association for academic research

    • Apache HTTP Server
    • Apple Business
    • Google Search Console
    • PHP
    • Plausible
    • WordPress

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17. 17
    Privacy Guides privacyguides.org English No trackers

    Privacy Guides

    Established in 2021, Privacy Guides is the largest impartial, non-profit media outlet focused on finding privacy tools and learning about protecting your digital life.

    • Google Workspace
    • jsDelivr
    • Cloudflare DNS
    • Express
    • Ghost
    • Google Search Console

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18. 18
    Fight for the Future fightforthefuture.org English No trackers

    Fight for the Future

    Who are we? We are a group of artists, engineers, activists, and technologists who have been behind the largest online protests in human history, channeling Internet outrage into political power to win public interest victories previously thought to be impossible. We fight for a future where technology is a force for liberation— not oppression. Battle […]

    • Adobe Fonts
    • Apple Business
    • Cloudflare
    • Cloudflare DNS
    • Fathom
    • Google Search Console

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19. 19
    Wikimedia wikimedia.org Top 1K English No trackers

    Wikimedia

    The Wikimedia movement is a global community of people, projects, and activities working together to create and share knowledge freely.

    • Google Workspace
    • Microsoft 365
    • Google Search Console
    • Miro

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20. 20
    Observation.org observation.org English No trackers

    Checking if you are not a bot

    Biodiversity Citizen Science & Monitoring

    • Google Workspace
    • Microsoft 365
    • Amazon Route 53
    • Brevo
    • Google Search Console
    • nginx

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Closest first, by how much each site’s offer resembles Crossref’s. Trackers are counted the same way as above. Highlighted technologies are ones Crossref uses too. Votes and comments come from visitors and don’t change the order.

04 · History

No changes yet. Each new crawl is compared with the last one, and what Crossref 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.