letsencrypt.org
Let's Encrypt
Who runs Let's Encrypt, what it tracks and what it costs, and the 20 closest SSL/TLS certificate authority alternatives.
- Who’s behind it
- Not stated
- Online since
- Unknown
- Trackers
- Prices
- No pricing page
- Last price change
- –
- Closest alternative
- ZeroSSL
Measured from Let's Encrypt’s own pages, the Internet Archive and public records. Hover a dotted value for its source and date.
Visit Let's Encrypt01 · Who’s behind it
Who runs Let's Encrypt
Let's Encrypt letsencrypt.org
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.
Wikidata: certificate authority launched in 2015
- Company
- No imprint we could read
- Online since
- Not in the Internet Archive
- Audience
- In English
02 · Privacy
What Let's Encrypt 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.
trackers that follow visitors
None of the 20 alternatives below has fewer; 18 have more.
Privacy-friendly alternatives →- Cookie banner
- None found
We found no trackers, ad pixels or third-party embeds on Let's Encrypt’s homepage.
03 · Alternatives
Alternatives to Let's Encrypt
Thumbs up if it’s a real alternative to Let's Encrypt, thumbs down if it isn’t.
- 01
Free SSL Certificates and SSL Tools - ZeroSSL
Free SSL certificates issued instantly online, supporting ACME clients, SSL monitoring, quick validation and automated SSL renewal via ZeroSSL Bot or REST API.
Very close - 02
Digital Certificates - PKI - SSL/TLS 🌎 GlobalSign GMO
We're experts in automated, Scalable, Integrated Digital Certificates Solutions, SSLs/TLSs, managed PKI, IoT, authentication & email security. Learn more about our identity management services.
Very close - 03
commercial SSL certificate provider
Very close - 04
SSL Certificate & Digital Certificate Authority - SSL.com
SSL.com provides SSL/TLS & digital certificates to secure and encrypt data with our 4096-bit SSL/TLS Certificates, trusted by all popular browsers.
Very close - 05
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.
Very close - 06
Google Trust Services | Home
Google Trust Services
Very close - 07
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.
Very close - 08
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.
Very close - 09
GeoTrust | SSL Digital Certificate Authority | Encryption & Authentication
SSL certificates by DigiCert secure unlimited servers with the strongest encryption and highest authentication available.
Very close - 10
Buypass AS - Simplifies online identification and payment
Norwegian-developed digital security solutions | Electronic ID | Payment | Multi Factor Authentication | SSL Certificates | Qualified eSeal Certificates|
Close - 11
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
Very close - 12
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.
Very close - 13
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.
Very close - 14
NLnet Labs - Home
Research & Development, Internet architecture, DNS, Routing, Stability and Security.
Very close - 15
Home | CSA
The Cloud Security Alliance (CSA) leads the industry in offering cloud security-specific research, education, certification, events and best practices.
Close - 16
Quad9 | A public and free DNS service for a better security and privacy
A public and free DNS service for a better security and privacy
Very close - 17
The Shadowserver Foundation
The Shadowserver Foundation is a nonprofit security organization working altruistically behind the scenes to make the Internet more secure for everyone.
Close - 18
OWASP Foundation - The Open Source Foundation for Application Security
OWASP is the nonprofit behind the Top 10, ASVS, ZAP, and hundreds more free application security projects. Explore our tools, standards, local chapters, global events, and news from a community of 250+ chapters worldwide.
Close - 19
IETF | Internet Engineering Task Force
The Internet Engineering Task Force (IETF) is the premier Internet standards body, developing open standards through open processes.
Close - 20
Linux Foundation - Decentralized innovation, built with trust
Helping open technology projects build world class open source software, communities and companies.
Close
Closest first, by how much each site’s offer resembles Let's Encrypt’s. Trackers are counted the same way as above. Highlighted technologies are ones Let's Encrypt uses too. Votes and comments come from visitors and don’t change the order.
04 · History
What changed
Price and policy history →No changes yet. Each new crawl is compared with the last one, and what Let's Encrypt 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.
The full technology stack, the competitor map and search numbers · 5 technologies
- Neighbours
- k = 20
- Sites searched
- 9,192
- Vector
- 384-d
- Query
- 33 ms
Competitor map
Each alternative by how close its vector is to Let's Encrypt’s (x) and how much traffic it gets, how much of the stack it shares, or where it sits in the embedding space itself (y). Hover for the numbers, click to jump to it in the list.
similarity × popularity
Built with
- CSS & UI
- Font Awesome asset https://letsencrypt.org/fontawesome-free-6.5.2-web/css/all.min.css
- Live chat & support
- Zendesk TXT v=spf1 include:_spf.google.com ip4:23.178.112.0/24 ip4:64.78.194.68 i…
- Hosting
- Netlify header x-nf-request-id: 01M6R294X135J5M97CCQHJDCQN
- Email hosting
- Google Workspace MX aspmx.l.google.com
- DNS hosting
- Cloudflare DNS NS owen.ns.cloudflare.com
What competitors use
Across the 20 closest sites.
- Google Search Console · not on letsencrypt.org 15/20
- Microsoft 365 · not on letsencrypt.org 12/20
- Google Tag Manager · not on letsencrypt.org 9/20
- Cloudflare · not on letsencrypt.org 7/20
- Google Workspace 7/20
- jQuery · not on letsencrypt.org 7/20
- Google Fonts · not on letsencrypt.org 7/20
- Atlassian · not on letsencrypt.org 6/20
- Font Awesome 5/20
- Salesforce · not on letsencrypt.org 5/20
- Google Analytics · not on letsencrypt.org 5/20
- PHP · not on letsencrypt.org 5/20
- Cloudflare DNS 4/20
- Bootstrap · not on letsencrypt.org 4/20
- Apple Business · not on letsencrypt.org 4/20
- UltraDNS · not on letsencrypt.org 4/20