Let's Encrypt's tech stack
What does Let's Encrypt use?
Let's Encrypt (lencr.org) uses at least 9 tools we can see from public records, including Netlify for hosting, Cloudflare for content delivery and Let's Encrypt for security. Last checked .
- Company page
- Tools found
- 9
- Categories
- 4
- Layers
- 3 of 5
- Last checked
- Oct 2026
Let's Encrypt's stack, layer by layer
Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.
Edge & Hosting
3 tools, where the bytes are served from
Hosting & Cloud
CDN & Edge
Application
1 tool, what the product is built with
Media & UI
Company Ops
5 tools, what the team runs on day to day
Let's Encrypt tech stack FAQ
What tools does Let's Encrypt use?
As of October 2026, runsonwhat has found 9 tools at Let's Encrypt (lencr.org) in public records. Edge & Hosting: Cloudflare, Akamai and Netlify. Application: Font Awesome. Company Ops: Let's Encrypt, Sectigo and DigiCert. Last checked October 9, 2026.
What cloud does Let's Encrypt run on?
Let's Encrypt uses Netlify for hosting and cloud infrastructure, according to runsonwhat (October 2026). runsonwhat found Netlify through a subdomain that points at Netlify and code on lencr.org. Netlify is used by 11,058 companies runsonwhat tracks.
Does Let's Encrypt use Cloudflare?
Yes. runsonwhat found Cloudflare at Let's Encrypt through DNS records that point at Cloudflare. Cloudflare is a CDN & Edge tool used by 693,817 companies runsonwhat tracks.
How does runsonwhat know what Let's Encrypt uses?
runsonwhat reads public records only. Of the 9 tools at Let's Encrypt, 6 were found through DNS records, 2 through subdomains that point at the vendor and 1 through code on lencr.org. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and lencr.org about monthly.
We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.