Caddy

Fast and extensible multi-platform HTTP/3 web server with automatic HTTPS

Features

• Easy configuration with the Caddyfile
• Powerful configuration with its native JSON config
• Dynamic configuration with the JSON API
• Config adapters if you don’t like JSON
• Automatic HTTPS by default

• ZeroSSL and Let’s Encrypt for public names
• Fully-managed local CA for internal names & IPs
• Can coordinate with other Caddy instances in a cluster
• Multi-issuer fallback

• Stays up when other servers go down due to TLS/OCSP/certificate-related issues
• Production-ready after serving trillions of requests and managing millions of TLS certificates
• Scales to hundreds of thousands of sites as proven in production
• HTTP/1.1, HTTP/2, and HTTP/3 supported all by default
• Highly extensible modular architecture lets Caddy do anything without bloat
• Runs anywhere with no external dependencies (not even libc)
• Written in Go, a language with higher memory safety guarantees than other servers
• Actually fun to use
• So much more to discover