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HAProxy vs Caddy: catalog facts
HAProxy	Caddy
Free HAProxy Community Edition is free and open source. HAProxy Enterprise is a paid product.	Free Free and open source under Apache 2.0.
Linux, Self-hosted	Windows, macOS, Linux, Self-hosted
Handles extremely high connection rates with predictable latency Detailed health checking, queuing and rate limiting built in	Automatic HTTPS by default, including a managed local CA for internal names and IPs A working reverse proxy with TLS takes two lines of configuration
Configuration is its own language with a steep learning curve No native automatic certificate issuance; ACME is handled alongside it	Fewer third-party modules and less documentation than nginx Adding modules means rebuilding the binary with xcaddy
Self-hosted	Downloadable app, Self-hosted
Open source	Open source
License: GPL-2.0	License: Apache-2.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 21, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.