h2o ☆

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Description:
HTTP server with support for HTTP/1.x and HTTP/2

Type: Formula | Tracked Since: Dec 28, 2025

Links: Homepage | formulae.brew.sh

Category: Networking

Tags: http-server http2 web-server reverse-proxy performance

Install: brew install h2o

About:
H2O is a high-performance, optimized HTTP server designed for speed and efficiency. It natively supports modern protocols including HTTP/1.x, HTTP/2, and TLS. Its event-driven architecture makes it ideal for serving static content and acting as a reverse proxy.

Key Features:

Native HTTP/2 and TLS support
Event-driven, high-performance architecture
Built-in reverse proxy capabilities
Flexible configuration via YAML

Use Cases:

High-performance static file serving
Reverse proxying for application servers
Terminating TLS/SSL connections efficiently

Alternatives:

nginx – Nginx is more mature with a vast ecosystem, while H2O focuses on raw performance and modern protocol support out of the box.
caddy – Caddy prioritizes ease of use with automatic HTTPS, whereas H2O emphasizes raw throughput and HTTP/2 optimization.

Version History

Detected	Version	Rev	Change	Commit
Sep 12, 2025 11:18am		3	VERSION_BUMP	9ac45576
Sep 13, 2024 4:11pm		3	VERSION_BUMP	6c66a64c