ZeroSSL

01 · Who’s behind it

Who runs ZeroSSL

ZeroSSL zerossl.com

Free SSL certificates issued instantly online, supporting ACME clients, SSL monitoring, quick validation and automated SSL renewal via ZeroSSL Bot or REST API.

Wikidata: certificate authority

Company

No imprint we could read

Online since

Not in the Internet Archive

Audience

In English

02 · Privacy

What ZeroSSL 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 ZeroSSL match.

1. 01
   Let's Encrypt letsencrypt.org Top 10K English No trackers

   Let's Encrypt

   Let's Encrypt is a free, automated, and open Certificate Authority brought to you by the nonprofit Internet Security Research Group (ISRG). Read all about our work in our Annual Report.

   • Cloudflare DNS
   • Google Workspace
   • Zendesk
   • Font Awesome
   • Netlify

   0 say Let's Encrypt is a good alternative to ZeroSSL 0 say Let's Encrypt isn’t a real alternative to ZeroSSL

   Comment

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2. 02
   Sectigo sectigo.com Top 10K English 2 trackers

   Certificate Management Solutions & SSL Certificates | Sectigo® Official

   Sectigo is a leading provider of SSL certificates & automated certificate management solutions. A Certificate Authority trusted by global brands for 20+ years.

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

   0 say Sectigo is a good alternative to ZeroSSL 0 say Sectigo isn’t a real alternative to ZeroSSL

   Comment

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3. 03
   pki.goog Top 1K English 1 tracker

   Google Trust Services | Home

   Google Trust Services

   • Google Search Console
   • Google Workspace
   • Google Analytics
   • Google Fonts

   0 say pki.goog is a good alternative to ZeroSSL 0 say pki.goog isn’t a real alternative to ZeroSSL

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4. 04
   Thawte thawte.com Top 10K English 1 tracker

   Smart Global SSL Security | Thawte

   At Thawte, Digital Trust is at the center of confidence—confidence in visiting your site, entering information, and making a purchase.

   • Adobe Experience Manager
   • Adobe Experience Platform Tags
   • Fastly
   • Imperva
   • Microsoft 365
   • Salesforce

   0 say Thawte is a good alternative to ZeroSSL 0 say Thawte isn’t a real alternative to ZeroSSL

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5. 05
   GeoTrust geotrust.com Top 10K English 2 trackers

   GeoTrust | SSL Digital Certificate Authority | Encryption & Authentication

   SSL certificates by DigiCert secure unlimited servers with the strongest encryption and highest authentication available.

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

   0 say GeoTrust is a good alternative to ZeroSSL 0 say GeoTrust isn’t a real alternative to ZeroSSL

   Comment

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6. 06
   RapidSSL rapidssl.com Top 10K English 2 trackers

   Upgrade your TLS/SSL & Wildcard Certificates to GeoTrust | RapidSSL

   Buy, switch and resell TLS/SSL and Wildcard certificates from GeoTrust via trusted resellers spanning the globe. Upgrade to a GeoTrust TLS/SSL certificate and get greater warranties, tools, support and security, now powered by DigiCert.

   • Adobe Experience Manager
   • Adobe Experience Platform Tags
   • Fastly
   • Google Analytics
   • Imperva
   • Microsoft 365

   0 say RapidSSL is a good alternative to ZeroSSL 0 say RapidSSL isn’t a real alternative to ZeroSSL

   Comment

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7. 07
   Certum certum.eu English 1 tracker

   SSL Certificates, Electronic Signature, Code Signing: Certum

   Certum Certification Authority offers you solutions such as e-Signature, Electronic Seal, SSL Certificate or S/MIME Certificate.

   • Google Tag Manager
   • Akamai Edge DNS
   • Apache HTTP Server
   • Google Fonts
   • Microsoft 365
   • PHP

   0 say Certum is a good alternative to ZeroSSL 0 say Certum isn’t a real alternative to ZeroSSL

   Comment

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8. 08
   Harica harica.gr Top 10K English No trackers

   HARICA - Hellenic Academic and Research Institutions Certification Authority

   eSignatures Secure and Legal Digital Signing Made Simple Use your eSignature to sign documents like PDFs and ensure their content is secure and authentic. Learn More Products focused on your needs HARICA offers you trusted digital certificates for secure Websites, eMail protection, Code Signing, and legally binding eSignatures and eSeals. Recognized

   • Google Search Console
   • Amazon SES
   • bunny.net
   • Font Awesome
   • jQuery
   • PHP

   0 say Harica is a good alternative to ZeroSSL 0 say Harica isn’t a real alternative to ZeroSSL

   Comment

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9. 09
   IdenTrust identrust.com Top 10K English 1 tracker

   IdenTrust – Part of HID Global

   IdenTrust offers the most trusted & secure digital certificates used for digital signing, secure access & email encryption across a variety of industries.

   • Cloudflare
   • Google Tag Manager
   • Adobe Fonts
   • Atlassian
   • Bootstrap
   • Drupal

   0 say IdenTrust is a good alternative to ZeroSSL 0 say IdenTrust isn’t a real alternative to ZeroSSL

   Comment

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10. 10
    Keyfactor keyfactor.com English 2 trackers

    Trust Infrastructure for AI & Machines - Keyfactor

    Keyfactor helps organizations secure machine identities, cryptography, and AI systems with trust infrastructure that enables digital trust, crypto-agility, and quantum readiness.

    • Cloudflare
    • Google Search Console
    • Google Tag Manager
    • Zendesk
    • Adobe Fonts
    • Amazon SES

    0 say Keyfactor is a good alternative to ZeroSSL 0 say Keyfactor isn’t a real alternative to ZeroSSL

    Comment

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11. 11
    Carrd carrd.co Top 10K English No trackers

    Carrd - Simple, free, fully responsive one-page sites for pretty much anything

    A free platform for building simple, fully responsive one-page sites for pretty much anything.

    • Cloudflare
    • Cloudflare DNS
    • Google Search Console
    • Google Workspace
    • Amazon SES

    0 say Carrd is a good alternative to ZeroSSL 0 say Carrd isn’t a real alternative to ZeroSSL

    Comment

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12. 12
    Cloudflare cloudflare.com Top 100 English 1 tracker

    Cloudflare: Build for the agent era

    Welcome to Cloudflare - Powering the next generation of applications

    • Cloudflare
    • Google Search Console
    • Google Tag Manager
    • Google Workspace
    • Mailchimp Transactional
    • Zendesk

    0 say Cloudflare is a good alternative to ZeroSSL 0 say Cloudflare isn’t a real alternative to ZeroSSL

    Comment

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13. 13
    DNSExit dnsexit.com English 1 tracker

    DNSExit | Dynamic DNS, Remote Access, SMTP Relay, DNS Failover and Hosting

    DNSExit provides Dynamic DNS, Remote Access, SMTP relay, DNS failover, business email hosting, backup MX, SSL, domains, and web hosting for businesses, IT teams, and self-hosted users.

    • Google Search Console
    • Apache HTTP Server
    • Bootstrap
    • Google Analytics
    • Java
    • jQuery

    0 say DNSExit is a good alternative to ZeroSSL 0 say DNSExit isn’t a real alternative to ZeroSSL

    Comment

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14. 14
    MailerLite mailerlite.com Top 10K English 1 tracker

    Create Email Marketing Your Audience Will Love - MailerLite

    Digital marketing tools to grow your audience faster and drive revenue smarter. Backed by 24/7 award-winning support. Check it out now!

    • Cloudflare
    • Cloudflare DNS
    • Google Search Console
    • Google Workspace
    • Algolia
    • Google Cloud

    0 say MailerLite is a good alternative to ZeroSSL 0 say MailerLite isn’t a real alternative to ZeroSSL

    Comment

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15. 15
    Proton proton.me Top 10K English No trackers

    Proton: Privacy by default

    Over 100 million people use Proton to stay private and secure online. Get a free Proton account and take back your privacy.

    • Google Search Console
    • Astro
    • Proton Mail
    • Tailwind CSS
    • Yandex Webmaster
    • YouTube embeds

    0 say Proton is a good alternative to ZeroSSL 0 say Proton isn’t a real alternative to ZeroSSL

    Comment

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16. 16
    Gandi gandi.net Top 100 English No trackers

    Gandi.net - Gandi.net: Domain Names, Web Hosting, SSL Certificates and Emails

    ➤ Manage your websites, your emails, your SSL certificates, and VPS servers. ✅ Included with a domain name: 1 SSL certificate, Unlimited aliases & forwarding, and our LiveDNS.

    • Google Search Console
    • Fastly
    • nginx

    0 say Gandi is a good alternative to ZeroSSL 0 say Gandi isn’t a real alternative to ZeroSSL

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17. 17
    Sucuri sucuri.net English 4 trackers

    Sucuri - Complete Website Security, Protection & Monitoring

    Website security made simple—Sucuri offers fast malware cleanup, reliable monitoring, and powerful protection for any CMS.

    • Google Search Console
    • Google Tag Manager
    • Google Workspace
    • Google Fonts
    • HubSpot
    • jQuery

    0 say Sucuri is a good alternative to ZeroSSL 0 say Sucuri isn’t a real alternative to ZeroSSL

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18. 18
    DNSimple dnsimple.com Top 10K English 1 tracker

    Reliable DNS and Domain Management with DNSimple

    Reliable DNS hosting and domain management with DNSimple's CLI, API, and automation tools. Register and transfer domains, set up SSL, and start free for 30 days.

    • Google Search Console
    • Google Tag Manager
    • Google Workspace
    • Microsoft 365
    • nginx
    • YouTube embeds

    0 say DNSimple is a good alternative to ZeroSSL 0 say DNSimple isn’t a real alternative to ZeroSSL

    Comment

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19. 19
    Mailchimp mailchimp.com Top 1K English 2 trackers

    Email & SMS Marketing Platform | Mailchimp

    Utilize real-time user behavior data and artificial intelligence to convert more customers. Easy to use, get started for free!

    • Google Search Console
    • Google Workspace
    • Adobe
    • Adobe Experience Manager
    • Akamai
    • Akamai Bot Manager

    0 say Mailchimp is a good alternative to ZeroSSL 0 say Mailchimp isn’t a real alternative to ZeroSSL

    Comment

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20. 20
    Sanity sanity.io Top 10K English 4 trackers

    The Content Operating System for the AI era | Sanity

    Sanity is the back-end built for AI content operations. Power web, mobile, and agentic applications at scale.

    • Google Search Console
    • Google Tag Manager
    • Google Workspace
    • Apple Business
    • Astro
    • Fathom

    0 say Sanity is a good alternative to ZeroSSL 0 say Sanity isn’t a real alternative to ZeroSSL

    Comment

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