Lets Encrypt

Category - Certificate Authority

Let's Encrypt is a free, automated, and open certificate authority brought to you by the nonprofit Internet Security Research Group (ISRG).



We have discovered  37,990,974 live websites   that are using Lets Encrypt.

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Technology usage statistics

Websites using Lets Encrypt37,990,974 websites
Most popular in the country United States
Market position in Certificate Authority#1
Market share in Certificate Authority56.07%

Technology adoption

Recent changes in Lets Encrypt usage. (See Lets Encrypt Usage Changes report)
Websites that added Lets Encrypt+2,379,112
Websites that dropped Lets Encrypt-1,438,097

Lets Encrypt usage distribution by website rank

The correlation between utilization of Lets Encrypt technology and the relative popularity of websites

Market Share

Lets Encrypt market share within the Certificate Authority category



Geographical Distribution

Technology usage distribution by websites across the globe.



Websites utilizing Lets Encrypt

Top websites that use Lets Encrypt
DomainCountryRankContacts
gmpg.org Canada10
player.vimeo.com United States51
en.wikipedia.org United States53
cdnjs.com United States61
idp.ecolint.ch Switzerland120
cdn.shopify.com United States125
See full domain list

Alternative Technologies


Sectigo: Total 5,277,541 domains found using Sectigo
DigiCert: Total 4,492,649 domains found using DigiCert
Google Trust Services: Total 3,582,346 domains found using Google Trust Services
GoDaddy CA: Total 2,632,328 domains found using GoDaddy CA
Encryption Everywhere CA: Total 2,286,657 domains found using Encryption Everywhere CA
cPanel CA: Total 2,220,698 domains found using cPanel CA
GlobalSign CA: Total 1,234,460 domains found using GlobalSign CA
Cloudflare Certificate: Total 1,158,718 domains found using Cloudflare Certificate
AWS Certificate Manager: Total 1,031,106 domains found using AWS Certificate Manager
RapidSSL CA: Total 718,843 domains found using RapidSSL CA