ISRCTN

01 · Who’s behind it

Who runs ISRCTN

ISRCTN isrctn.com

Wikidata: clinical trial registry

Company

No imprint we could read

Online since

Not in the Internet Archive

Audience

In English

02 · Privacy

What ISRCTN 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.

16 of the 60 sites closest to ISRCTN match.

1. 01
   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 ISRCTN 0 say ClinicalTrials.gov isn’t a real alternative to ISRCTN

   Comment

   Compare ClinicalTrials.gov with ISRCTN →
   Very close
2. 02
   UpToDate uptodate.com English No trackers

   UpToDate

   medical software company

   • Microsoft 365
   • Google Search Console
   • Java
   • reCAPTCHA
   • Amazon Route 53
   • Salesforce

   0 say UpToDate is a good alternative to ISRCTN 0 say UpToDate isn’t a real alternative to ISRCTN

   Comment

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   Very close
3. 03
   ORCID orcid.org Top 10K English No trackers

   ORCID

   non-profit organization that issues ORCID Identifiers

   • Microsoft 365
   • Apple Business
   • Amazon Web Services
   • Cloudflare
   • Cloudflare DNS
   • Google Fonts

   0 say ORCID is a good alternative to ISRCTN 0 say ORCID isn’t a real alternative to ISRCTN

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   Very close
4. 04
   DataCite datacite.org English No trackers

   DataCite – Connecting Research, Advancing Knowledge - DataCite

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

   • Microsoft 365
   • Bootstrap
   • cdnjs
   • Font Awesome
   • Google Fonts
   • Google Search Console

   0 say DataCite is a good alternative to ISRCTN 0 say DataCite isn’t a real alternative to ISRCTN

   Comment

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   Very close
5. 05
   British and Irish Legal Information Institute bailii.org English No trackers

   Making sure you're not a bot!

   legal database

   0 say British and Irish Legal Information Institute is a good alternative to ISRCTN 0 say British and Irish Legal Information Institute isn’t a real alternative to ISRCTN

   Comment

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6. 06
   IZA iza.org English No trackers

   Welcome | IZA - Institute of Labor Economics

   Welcome to the IZA@LISER Network website

   • Microsoft 365
   • Alpine.js
   • Google Fonts
   • Google Search Console
   • jsDelivr
   • Laravel

   0 say IZA is a good alternative to ISRCTN 0 say IZA isn’t a real alternative to ISRCTN

   Comment

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7. 07
   Khan Academy khanacademy.org Top 10K English No trackers

   Client Challenge

   non-profit educational organization

   • GlobalSign
   • Microsoft 365
   • Apple Business
   • Canva
   • Google Search Console
   • Google Workspace

   0 say Khan Academy is a good alternative to ISRCTN 0 say Khan Academy isn’t a real alternative to ISRCTN

   Comment

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8. 08
   docs.rs Top 10K English No trackers

   Docs.rs

   official documentation website for Rust libraries

   • Fastly
   • Font Awesome
   • Google Search Console
   • Mailgun
   • nginx
   • Amazon Route 53

   0 say docs.rs is a good alternative to ISRCTN 0 say docs.rs isn’t a real alternative to ISRCTN

   Comment

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9. 09
   worldrecordacademy.org English No trackers

   2026 World Records: UNLIMITED categories, FASTEST services, record holder logo!

   World Record Academy's Official page: UNLIMITED categories, FASTEST services, LIFETIME listing, World's LARGEST world record database, LEGAL validity, ALL participants listed!

   • Bing Webmaster Tools
   • Google Search Console
   • jQuery
   • nginx

   0 say worldrecordacademy.org is a good alternative to ISRCTN 0 say worldrecordacademy.org isn’t a real alternative to ISRCTN

   Comment

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   Very close
10. 10
    DOI.org query endpoint doi.org Top 1K English No trackers

    Home Page

    API endpoint

    • Amazon SES
    • Bootstrap
    • Cloudflare
    • Cloudflare DNS
    • Amazon CloudFront
    • Font Awesome

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

    Comment

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    Very close
11. 11
    JSTOR jstor.org Top 10K English No trackers

    Client Challenge

    distributor of eBooks and other digital media

    • GlobalSign
    • Microsoft 365
    • Fastly
    • Google Search Console
    • Meta Business Suite
    • OpenAI

    0 say JSTOR is a good alternative to ISRCTN 0 say JSTOR isn’t a real alternative to ISRCTN

    Comment

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12. 12
    Dynadot dynadot.com Top 10K English No trackers

    Register, Buy & Manage Domain Names Online | Dynadot

    Search 800+ domain extensions, register names at transparent prices, and manage DNS, privacy, email, transfers, renewals, and domain portfolios in Dynadot.

    • Cloudflare
    • Cloudflare DNS
    • Google Search Console
    • Notion
    • Nuxt
    • Vue.js

    0 say Dynadot is a good alternative to ISRCTN 0 say Dynadot isn’t a real alternative to ISRCTN

    Comment

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    Very close
13. 13
    University of Leeds leeds.ac.uk Top 10K English No trackers

    University of Leeds

    The University of Leeds is a large UK higher education institution and part of the Russell Group of leading universities.

    • Microsoft 365
    • Adobe Fonts
    • Apple Business
    • Atlassian
    • Google Search Console
    • Meta Business Suite

    0 say University of Leeds is a good alternative to ISRCTN 0 say University of Leeds isn’t a real alternative to ISRCTN

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14. 14
    Svelte svelte.dev English No trackers

    Svelte • Web development for the rest of us

    Web development for the rest of us

    • Cloudflare DNS
    • Fastmail
    • Google Search Console
    • SvelteKit
    • Vercel

    0 say Svelte is a good alternative to ISRCTN 0 say Svelte isn’t a real alternative to ISRCTN

    Comment

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15. 15
    Radix radix.website English No trackers

    The world’s largest portfolio registry for new domains | Radix Registry

    Radix is a leading new domain registry, offering an extensive domain portfolio that empowers digital identities across the globe.

    • Brevo
    • Cloudflare
    • Cloudflare DNS
    • Google Search Console
    • Google Workspace

    0 say Radix is a good alternative to ISRCTN 0 say Radix isn’t a real alternative to ISRCTN

    Comment

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16. 16
    SIDN sidn.nl English No trackers

    For confidence online | SIDN

    At SIDN you can check your .nl domain name. We also can offer you security services, like SIDN BrandGuard.

    • Google Cloud
    • Microsoft 365
    • Apple Business
    • Contentful
    • Google Search Console
    • OpenResty

    0 say SIDN is a good alternative to ISRCTN 0 say SIDN isn’t a real alternative to ISRCTN

    Comment

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    Close

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