Internet service / open-source technology · Established

Let's Encrypt / Certbot

Certificate authority / certificate automation client

What does Let's Encrypt / Certbot mean?

Let's Encrypt issues free TLS certificates; Certbot obtains, installs and renews them automatically for supported servers.

Category: Linux, Servers & Web Hosting
Maturity: Established
Owner or vendor: Internet Security Research Group / Electronic Frontier Foundation
Last reviewed: 2026-09-03

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