Alternatives and competitors
Sites like Let's Encrypt
The 20 closest certificate authority infrastructure alternatives to Let's Encrypt, ranked by what they actually offer, and the 3 technologies behind it.
Looking for an alternative to Let's Encrypt? The closest matches are SSL.com, EuroDNS and Thawte. We match sites by what they actually offer, from their homepages, Wikidata and a summary by Claude, in any language. Vote on each alternative and leave a short note to help the next person choose.
- Neighbours
- k = 20
- Sites searched
- 4,032
- Vector
- 384-d
- Query
- 6 ms
01 · Entity
About Let's Encrypt
Let's Encrypt lencr.org
lencr.org - Let's Encrypt
What’s lencr.org? lencr.org is a domain name owned by Let’s Encrypt. We use it to host data that is referenced inside the certificates we issue. Why is my computer fetching this data? Is it malicious? No, the data on lencr.org is never malicious. When a device connects to lencr.org, it’s because client software on that device (like a web browser or an app) connected to another site, saw a Let’s Encrypt certificate, and is trying to verify that it’s valid. This is routine for many clients.
Wikidata: certificate authority launched in 2015
Summary by Claude
Infrastructure domain owned by Let's Encrypt that hosts certificate-related data, such as issuer certificates, CRLs and OCSP responses, which clients fetch to validate Let's Encrypt TLS certificates.
- Who it’s for
- Web browsers, apps and network administrators
- Business model
- Nonprofit, donations and sponsorships
02 · Embedding space
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). Lines split each axis at the median. Hover for the numbers, click to jump to it in the list.
similarity × popularity
03 · Nearest neighbours
Alternatives to Let's Encrypt
Thumbs up if it’s a real alternative to Let's Encrypt, thumbs down if it isn’t.
- 01
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 cos 0.899 - 02
EuroDNS: Domains, Hosting & Web Essentials All In One Place
Find a domain, launch your website, and make it happen with us! From hosting, to SSL, to branded email: EuroDNS has everything you need in one place.
Close cos 0.893 - 03
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.
Close cos 0.886 - 04
NLnet Labs - Home
Research & Development, Internet architecture, DNS, Routing, Stability and Security.
Close cos 0.885 - 05
VentraIP | Join Australia's #1 Digital Service Provider*
VentraIP is Australia's most trusted provider for domain names, website hosting, email hosting and online solutions. Get started online today.
Close cos 0.886 - 06
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.
Close cos 0.881 - 07
Docs.rs
official documentation website for Rust libraries
Close cos 0.881 - 08
Security check | Network Solutions
American-based technology company and a subsidiary of Web.com
Close cos 0.882 - 09
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.
Close cos 0.881 - 10
GeoTrust | SSL Digital Certificate Authority | Encryption & Authentication
SSL certificates by DigiCert secure unlimited servers with the strongest encryption and highest authentication available.
Close cos 0.881 - 11
DonDominio | Your Domain, Web Hosting, Email and SSL Certificates provider
All you need to build up your website: Domain names, Web Hosting / Email accounts and SSL certificates. Build up your website now!
Close cos 0.883 - 12
Client Challenge
American hosting service, owned by Scribd, for professional content including presentations, infographics, documents, and videos
Close cos 0.881 - 13
Home Page | CISA
Cybersecurity and Infrastructure Security Agency: America's Cyber Defense Agency
Close cos 0.877 - 14
easyDNS - DNS, Domains, Web and Email Hosting Since 1998
The DNS Professionals: Anycast, Dynamic DNS, Enterprise DNS, Secondary DNS with TSIG, DNSSEC. We also offer web hosting, email and VPS. Amazing Support.
Close cos 0.878 - 15
Home Page
API endpoint
Close cos 0.875 - 16
Google Trust Services | Home
Google Trust Services
Close cos 0.874 - 17
Home - GoDaddy Corporate Domains
The fastest growing corporate registrar since 2018 (growth measured by increase in domains under management, based on our internal data and publicly reported figures), we combine deep expertise, cutting-edge technology, and unwavering commitment to provide the strategic guidance and support you need for confident domain management.
Close cos 0.873 - 18
Home | Aruba.it
Italian registrar and Web hosting company
Close cos 0.876 - 19
ISPConfig – Hosting Control Panel
ISPConfig is an open source hosting control panel for Linux. Manage websites, email, DNS, databases and users on one server or a whole multiserver setup.
Close cos 0.872 - 20
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.
Close cos 0.872
Ranked by score: the cosine similarity of each site’s vector to lencr.org’s, less a small penalty for generic sites that are close to everything. Highlighted technologies are ones Let's Encrypt uses too. Votes and comments come from visitors and don’t change the ranking.
04 · Fingerprints
Technology
What Let's Encrypt is built with, and what its closest competitors use, from its homepage’s code and its DNS records.
Built with
- CSS & UI
- Font Awesome asset https://letsencrypt.org/fontawesome-free-6.5.2-web/css/all.min.css
- Hosting
- Netlify header x-nf-request-id: 01M6R208VRE349SVFQGTM6H5RY
- DNS hosting
- Cloudflare DNS NS vera.ns.cloudflare.com
Stack changes
No changes yet. Each new crawl is compared with the last one, and what Let's Encrypt adds or drops shows up here.
What competitors use
Across the 20 closest sites.
- Google Search Console · not on lencr.org 14/20
- Microsoft 365 · not on lencr.org 10/20
- jQuery · not on lencr.org 8/20
- Google Tag Manager · not on lencr.org 7/20
- PHP · not on lencr.org 7/20
- Atlassian · not on lencr.org 6/20
- Font Awesome 5/20
- Google Analytics · not on lencr.org 5/20
- Google Fonts · not on lencr.org 5/20
- nginx · not on lencr.org 5/20
- Bootstrap · not on lencr.org 5/20
- WordPress · not on lencr.org 4/20
- Mailchimp · not on lencr.org 4/20
- Meta Business Suite · not on lencr.org 4/20
- Fastly · not on lencr.org 4/20
- Salesforce · not on lencr.org 4/20