Note
ZeroSSL actively supports and contributes to the open-source ecosystem by maintaining and integrating tools for SSL/TLS automation.
This list includes popular ACME clients and web servers that simplify certificate management and enable secure deployments.
Explore these projects to find solutions for automated HTTPS, containerized environments, and modern web infrastructure.
🔑 ACME Clients
🌐 Webserver
acme.sh is a lightweight ACME client for SSL/TLS certificate automation, supporting 170+ DNS.
| ⭐ Stars | 45k |
| 📅 Established | 2016 |
dehydrated is a simple bash-based ACME client for certificate automation.
| ⭐ Stars | 6k |
| 📅 Established | 2015 |
certmagic is a powerful and easy to use Go library for SSL/TLS certificate automation.
| ⭐ Stars | 5k |
| 📅 Established | 2016 |
acme-companion works alongside nginx-proxy to automate SSL/TLS certificate issuance and renewal via ACME.
| ⭐ Stars | 7k |
| 📅 Established | 2016 |
https://github.com/caddyserver/certmagic
acme-companion works alongside nginx-proxy to automate SSL/TLS certificate issuance and renewal via ACME.
| ⭐ Stars | 7k |
| 📅 Established | 2016 |
getssl provides lightweight server orchestration and SSL/TLS automation for containerized environments.
| ⭐ Stars | 1k |
| 📅 Established | 2017 |
AcmePHP is a PHP-based ACME client for automating SSL/TLS certificate issuance and renewal.
| ⭐ Stars | 1.2k |
| 📅 Established | 2016 |
auto-ssl is a Lua-based module for NGINX that automatically provisions and renews SSL certificates via ACME.
| ⭐ Stars | 1.5k |
| 📅 Established | 2015 |
Caddy Server is a powerful, extensible web server with built-in HTTPS.
| ⭐ Stars | 68k |
| 📅 Established | 2016 |
nginx-proxy is a containerized reverse proxy solution for NGINX, designed to automatically configure virtual hosts using environment variables.
| ⭐ Stars | 17k |
| 📅 Established | 2014 |
Ponzu is a powerful and extensible content management system written in Go, featuring built-in HTTPS and API-first design.
| ⭐ Stars | 5k |
| 📅 Established | 2016 |