the optimized HTTP/1.x, HTTP/2 server

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H2O is a new generation HTTP server that provides quicker response to users with less CPU utilization when compared to older generation of web servers. Designed from ground-up, the server takes full advantage of HTTP/2 features including prioritized content serving and server push, promising outstanding experience to the visitors of your web site.

Explanation of the benchmark charts can be found in the benchmarks page.

Key Features


List of all the vulnerabilities having been fixed can be found here.