HAProxy vs Caddy
A detailed comparison to help you choose between HAProxy and Caddy.
Quick Verdict
3.6/5
HAProxy
327 reviews
4.9/5
Caddy
14 reviews
Caddy is rated higher (4.9 vs 3.6). HAProxy is a free, open source, high-performance TCP/HTTP load balancer. Handles 100,000+ concurrent connections. Used by Reddit, Tumblr, and AWS. Known for reliability over many years. Caddy is a modern open source web server and load balancer with automatic HTTPS (Let's Encrypt/ZeroSSL) by default. No SSL configuration needed. Used for reverse proxying and load balancing.
HAProxy The reliable open source load balancer | Caddy Automatic HTTPS load balancer and web server | |
|---|---|---|
| Overview | ||
| Rating | 3.6 (327 reviews) | 4.9 (14 reviews)✓ |
| Pricing model | free | free |
| Starting price | Free | Free |
| Best for | High-traffic applications needing the most reliable open source load balancer for TCP/HTTP traffic | Developers wanting a load balancer/reverse proxy with automatic SSL that requires minimal configuration |
| Tags | ||
| Tags | free tieropen sourceself hostable | free tieropen sourceself hostable |
| Visit HAProxy → | Visit Caddy → | |
HAProxy
Pros
- + Handles 100,000+ concurrent connections
- + Very reliable — used by Reddit and AWS
- + Free and open source
Cons
- - No built-in GUI — configuration is file-based
- - Less feature-rich than enterprise solutions for advanced routing
Caddy
Pros
- + Automatic HTTPS — no SSL configuration needed
- + Simple Caddyfile configuration
- + Built-in load balancing and reverse proxy
Cons
- - Less performance than Nginx at extreme load
- - Smaller community than Nginx
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