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
   ISRCTN isrctn.com English 1 tracker

   ISRCTN Registry

   clinical trial registry

   • Google Cloud
   • GlobalSign
   • Google Tag Manager
   • Microsoft 365
   • UltraDNS

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

   Comment

   Compare ISRCTN with ClinicalTrials.gov →
   Very close
2. 02
   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
   • DocuSign
   • 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

   Comment

   Compare CenterWatch with ClinicalTrials.gov →
   Very close
3. 03
   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
   • Google Tag Manager
   • jQuery

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

   Comment

   Compare MedlinePlus with ClinicalTrials.gov →
   Very close
4. 04
   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
   • Meta Business Suite
   • 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

   Comment

   Compare National Cancer Institute with ClinicalTrials.gov →
   Very close
5. 05
   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
   • cdnjs
   • 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

   Comment

   Compare World Health Organization with ClinicalTrials.gov →
   Close
6. 06
   Grants.gov grants.gov English No trackers

   Home | Grants.gov

   USA federal website

   • Google Search Console
   • cdnjs
   • Amazon CloudFront
   • Microsoft 365
   • 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

   Comment

   Compare Grants.gov with ClinicalTrials.gov →
   Very close
7. 07
   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

   Comment

   Compare Isciii with ClinicalTrials.gov →
   Very close
8. 08
   United States Copyright Office copyright.gov Top 10K English 1 tracker

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

   Copyright Office Homepage

   • Google Search Console
   • Adobe Experience Platform Tags
   • Amazon SES
   • Bootstrap
   • Cloudflare
   • Cloudflare DNS

   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

   Comment

   Compare United States Copyright Office with ClinicalTrials.gov →
   Very close
9. 09
   CDC cdc.gov Top 1K English No trackers

   Centers for Disease Control and Prevention | CDC

   United States government public health agency

   • Google Search Console
   • Adobe
   • Akamai Edge DNS
   • Apple Business
   • 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

   Comment

   Compare CDC with ClinicalTrials.gov →
   Very close
10. 10
    National Archives and Records Administration archives.gov Top 10K English 1 tracker

    National Archives | Home

    National Archives and Records Administration

    • Google Fonts
    • Google Search Console
    • Bootstrap
    • Amazon CloudFront
    • Google Tag Manager
    • jQuery

    0 say National Archives and Records Administration is a good alternative to ClinicalTrials.gov 0 say National Archives and Records Administration isn’t a real alternative to ClinicalTrials.gov

    Comment

    Compare National Archives and Records Administration with ClinicalTrials.gov →
    Very close
11. 11
    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
    • Brevo
    • LiteSpeed
    • Microsoft 365
    • PHP
    • WordPress

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

    Comment

    Compare Inserm with ClinicalTrials.gov →
    Very close
12. 12
    DataCite datacite.org English No trackers

    DataCite – Connecting Research, Advancing Knowledge - DataCite

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

    • Google Fonts
    • Google Search Console
    • Bootstrap
    • cdnjs
    • Font Awesome
    • Google Workspace

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

    Comment

    Compare DataCite with ClinicalTrials.gov →
    Very close
13. 13
    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
    • Atlassian
    • Cloudflare DNS
    • DocuSign
    • Google Tag Manager
    • HubSpot

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

    Comment

    Compare KFF with ClinicalTrials.gov →
    Close
14. 14
    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.

    • Google Search Console
    • Adobe
    • Adobe Experience Manager
    • Adobe Experience Platform Tags
    • Akamai
    • Apache HTTP Server

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

    Comment

    Compare Canada with ClinicalTrials.gov →
    Very close
15. 15
    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.

    • Google Search Console
    • Akamai
    • Akamai Edge DNS
    • Google Tag Manager
    • HubSpot
    • Mailchimp

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

    Comment

    Compare National Academies with ClinicalTrials.gov →
    Very close
16. 16
    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

    • Google Search Console
    • Adobe
    • Adobe Fonts
    • Apple Business
    • DocuSign
    • Firebase

    0 say Pew Research Center is a good alternative to ClinicalTrials.gov 0 say Pew Research Center isn’t a real alternative to ClinicalTrials.gov

    Comment

    Compare Pew Research Center with ClinicalTrials.gov →
    Very close
17. 17
    ORCID orcid.org Top 10K English No trackers

    ORCID

    non-profit organization that issues ORCID Identifiers

    • Google Fonts
    • Google Search Console
    • Apple Business
    • Amazon Web Services
    • Cloudflare
    • Cloudflare DNS

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

    Comment

    Compare ORCID with ClinicalTrials.gov →
    Close
18. 18
    System for Award Management sam.gov English 1 tracker

    Home | SAM.gov

    system for tracking US federal acquisition and contracting

    • Google Search Console
    • Amazon SES
    • Amazon CloudFront
    • Drupal
    • Google Tag Manager
    • PHP

    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

    Comment

    Compare System for Award Management with ClinicalTrials.gov →
    Very close
19. 19
    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
    • Adobe
    • Amazon SES
    • Apache HTTP Server
    • Atlassian
    • Amazon CloudFront

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

    Comment

    Compare NSF with ClinicalTrials.gov →
    Close
20. 20
    Crossref crossref.org Top 10K English 1 tracker

    Crossref

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

    • Algolia
    • Amazon SES
    • Amazon Web Services
    • Bootstrap
    • cdnjs
    • Amazon CloudFront

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

    Comment

    Compare Crossref with ClinicalTrials.gov →
    Very close

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.