Web Servers

4 open source tools compared. Sorted by stars — scroll down for our analysis.

Tool	Stars	Velocity	Language	License	Score
Caddy Fast, multi-platform web server with automatic HTTPS	71.1k	—	Go	Apache License 2.0	82
Traefik Cloud-native application proxy	62.4k	—	Go	MIT License	82
Kong Cloud-native API gateway	43.0k	—	Lua	Apache License 2.0	79
Nginx HTTP and reverse proxy server	29.8k	+101/wk	C	BSD 2-Clause "Simplified" License	79

Our Analysis

Caddy71.1k★

Caddy is the web server that gets HTTPS right automatically. Drop in a Caddyfile, point your domain, and it provisions and renews Let's Encrypt certificates without you touching a single TLS config. One binary, no dependencies, written in Go. Nginx is the battle-tested standard but configuring TLS correctly is a dark art. Traefik is the container-native alternative with Docker/Kubernetes auto-discovery. Apache is still around for legacy reasons. For commercial, Cloudflare's proxy handles HTTPS for you. If you're deploying a side project, API, or reverse proxy and don't want to think about certificates, Caddy saves you hours. The Caddyfile syntax is dramatically simpler than Nginx config. It handles HTTP/2, HTTP/3, and OCSP stapling automatically. The catch: performance is slightly behind Nginx under extreme load — we're talking thousands of requests per second difference that most apps never hit. The module ecosystem is smaller than Nginx's. And if your team already knows Nginx cold, the migration cost may not justify the convenience.

Traefik62.4k★

The reverse proxy that configures itself. Traefik auto-discovers services from Docker, Kubernetes, and a dozen other providers, then routes traffic with automatic HTTPS via Let's Encrypt. If you're running microservices and tired of manually editing nginx configs, Traefik is the answer. Nginx is the incumbent — faster for static files, more battle-tested, but configuration is manual. Caddy auto-handles HTTPS like Traefik but with less orchestration awareness. HAProxy is the performance king for pure load balancing. Envoy is the service mesh option. With 62K+ stars and established maturity, Traefik is the standard for Docker and Kubernetes environments. Labels on your containers become routing rules — no config files to maintain. The dashboard gives you real-time visibility into routes, services, and middleware. The catch: Traefik is slower than Nginx for raw throughput — if you're serving static assets at massive scale, Nginx wins. The v2/v3 migration was painful for many users. Rate limiting and advanced WAF features require Traefik Enterprise (paid). And the YAML/TOML configuration, while powerful, can get deeply nested and confusing.

Kong43.0k★

Kong is the most widely adopted API gateway — 345k deployments, 37k companies, and an enterprise plugin ecosystem covering auth, rate limiting, logging, and service mesh. If you're managing 10+ microservices and need a central control plane for traffic, Kong is the proven choice. Traefik is lighter and Kubernetes-native — a single Go binary with automatic service discovery and no external database required. Apache APISIX offers real-time configuration changes without restarts via etcd. For simple reverse proxying, Nginx or Caddy do the job without an API gateway's complexity. Use Kong if you need enterprise-grade API management with a deep plugin ecosystem and your team manages multiple services. The catch: Kong's free tier is limited — advanced features (RBAC, developer portal, analytics) require the commercial license. The Lua-based plugin system is powerful but Lua isn't a language most teams know. For Kubernetes-native environments, Traefik's automatic configuration is simpler than Kong's declarative configs. And if you only have a handful of services, an API gateway is overhead you don't need.

Nginx29.8k★

Nginx powers 34% of all websites — it's the reverse proxy and web server that the internet runs on. Blazing fast, battle-tested, handles tens of thousands of concurrent connections with minimal memory. If you're deploying a web app to a VPS, Nginx is probably already in your stack. For high-traffic production deployments where every microsecond matters, Nginx is unmatched. Caddy is the modern alternative — automatic HTTPS, simpler config (3 lines vs 15), and a single binary with no dependencies. Traefik auto-discovers services in Docker/Kubernetes. Apache is the legacy option nobody chooses for new projects. The catch: Nginx config syntax is arcane — you'll copy-paste from Stack Overflow forever. No built-in automatic HTTPS (you need Certbot). Dynamic config requires reloads or the commercial Nginx Plus ($3,500/year). The open-source version lacks a REST API. For most indie hackers, Caddy's simplicity and auto-HTTPS make it the better default. Nginx is for when you need maximum control.