ClinicalTrials.gov

01 · Who’s behind it

Who runs ClinicalTrials.gov

ClinicalTrials.gov clinicaltrials.gov

Wikidata: United States government registry of clinical trials

Company

No imprint we could read

Online since

Not in the Internet Archive

Audience

Top 10K In English

02 · Privacy

What ClinicalTrials.gov 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 ClinicalTrials.gov match.

We can’t read clinicaltrials.gov’s homepage (too little text on the homepage), so it’s compared on what Wikidata and Wikipedia say about it.

1. 01
   EU Clinical Trials Register clinicaltrialsregister.eu No trackers

   EU Clinical Trials Register - Update

   The EU Clinical Trials Register provides a free and accurate search of clinical trials in European Union member states and the European Economic Area.

   0 say EU Clinical Trials Register is a good alternative to ClinicalTrials.gov 0 say EU Clinical Trials Register isn’t a real alternative to ClinicalTrials.gov

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2. 02
   ISRCTN isrctn.com English 1 tracker

   ISRCTN Registry

   clinical trial registry

   • Google Cloud
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   0 say ISRCTN is a good alternative to ClinicalTrials.gov 0 say ISRCTN isn’t a real alternative to ClinicalTrials.gov

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3. 03
   CenterWatch centerwatch.com English 2 trackers

   CenterWatch Homepage - Clinical Trial Listing Database & Insights | CenterWatch

   CenterWatch Research Hub Trusted thought leadership, transformative training, and essential clinical trial resources. Benchmark Reports In-Focus Topics Latest

   • Google Search Console
   • Cloudflare
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   • Google Tag Manager
   • GSAP
   • Mailgun

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

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4. 04
   MedlinePlus medlineplus.gov Top 10K English 1 tracker

   MedlinePlus - Health Information from the National Library of Medicine

   Find information on health conditions, wellness issues, and more in easy-to-read language on MedlinePlus, the up-to-date, trusted health information site from the NIH and the National Library of Medicine.

   • Google Search Console
   • Amazon Web Services
   • Bing Webmaster Tools
   • Amazon CloudFront
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   • jQuery

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

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5. 05
   National Cancer Institute cancer.gov Top 10K English 1 tracker

   Comprehensive Cancer Information - NCI

   Accurate, up-to-date, comprehensive cancer information from the U.S. government's principal agency for cancer research.

   • Google Fonts
   • Google Search Console
   • Adobe Experience Platform Tags
   • Drupal
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   • nginx

   0 say National Cancer Institute is a good alternative to ClinicalTrials.gov 0 say National Cancer Institute isn’t a real alternative to ClinicalTrials.gov

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6. 06
   World Health Organization who.int Top 1K English 1 tracker

   World Health Organization (WHO)

   The United Nations agency working to promote health, keep the world safe and serve the vulnerable

   • Google Fonts
   • Google Search Console
   • Apple Business
   • Atlassian
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   • Cloudflare

   0 say World Health Organization is a good alternative to ClinicalTrials.gov 0 say World Health Organization isn’t a real alternative to ClinicalTrials.gov

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7. 07
   Grants.gov grants.gov English No trackers

   Home | Grants.gov

   USA federal website

   • Google Search Console
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   • Nuxt
   • Vue.js

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

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8. 08
   Isciii isciii.es English 1 tracker

   Instituto de Salud Carlos III. - ISCIII Portal Web

   La misión del ISCIII es contribuir a mejorar la salud de todos los ciudadanos con investigación e innovación en Ciencias de la Salud y Biomedicina.

   • Google Search Console
   • Java
   • jQuery
   • Matomo
   • Microsoft 365
   • Proofpoint

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

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9. 09
   United States Copyright Office copyright.gov Top 10K English 1 tracker

   U.S. Copyright Office | U.S. Copyright Office

   Copyright Office Homepage

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   0 say United States Copyright Office is a good alternative to ClinicalTrials.gov 0 say United States Copyright Office isn’t a real alternative to ClinicalTrials.gov

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10. 10
    CDC cdc.gov Top 1K English No trackers

    Centers for Disease Control and Prevention | CDC

    United States government public health agency

    • Google Search Console
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    • Akamai Edge DNS
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    • Atlassian
    • Azure Front Door

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

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11. 11
    National Archives and Records Administration archives.gov Top 10K English 1 tracker

    National Archives | Home

    National Archives and Records Administration

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12. 12
    Inserm inserm.fr English No trackers

    Inserm

    L'Institut national de la santé et de la recherche médicale (Inserm) est le seul organisme de recherche public français entièrement dédié à la santé humaine. Notre objectif : améliorer la santé de tous par le progrès des connaissances sur le vivant et sur les maladies, l’innovation dans les traitements et la recherche en santé publique.

    • Bing Webmaster Tools
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    • PHP
    • WordPress

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

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13. 13
    DataCite datacite.org English No trackers

    DataCite – Connecting Research, Advancing Knowledge - DataCite

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

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

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14. 14
    KFF kff.org English 2 trackers

    KFF - The independent source for health policy research, polling, and news.

    KFF is the independent source for health policy research, polling, and journalism. Our mission is to serve as a nonpartisan source of information for policymakers, the media, the health policy community, and the public.

    • Google Search Console
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15. 15
    Canada canada.ca Top 10K English 1 tracker

    Canada.ca

    The Government of Canada website is a single point of access to all programs, services, departments, ministries and organizations of the Government of Canada.

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16. 16
    National Academies nationalacademies.org Top 10K English 3 trackers

    National Academies of Sciences, Engineering, and Medicine

    Our work helps shape sound policies, inform public opinion, and advance the pursuit of science, engineering, and medicine.

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

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17. 17
    Pew Research Center pewresearch.org Top 10K English 4 trackers

    Pew Research Center | Nonpartisan, nonadvocacy, public opinion polling and data-driven social science research

    Numbers, Facts and Trends Shaping Your World

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18. 18
    ORCID orcid.org Top 10K English No trackers

    ORCID

    non-profit organization that issues ORCID Identifiers

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

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19. 19
    System for Award Management sam.gov English 1 tracker

    Home | SAM.gov

    system for tracking US federal acquisition and contracting

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    0 say System for Award Management is a good alternative to ClinicalTrials.gov 0 say System for Award Management isn’t a real alternative to ClinicalTrials.gov

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20. 20
    NSF nsf.gov Top 10K English 1 tracker

    NSF - U.S. National Science Foundation

    NSF is an independent federal agency that supports science and engineering in all 50 states and U.S. territories.

    • Google Search Console
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    0 say NSF is a good alternative to ClinicalTrials.gov 0 say NSF isn’t a real alternative to ClinicalTrials.gov

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Closest first, by how much each site’s offer resembles ClinicalTrials.gov’s. Trackers are counted the same way as above. Highlighted technologies are ones ClinicalTrials.gov 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 ClinicalTrials.gov 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.