H2O

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. Full support for dependency and weight-based prioritization with server-side tweaks. Static file serving, FastCGI, reverse proxy, scriptable using mruby (Rack-based), graceful restart and self-upgrade, BPF-based tracing tool (experimental), and more. H2O is a new generation HTTP server. Not only is it very fast, it also provides much quicker response to end-users when compared to older generations of HTTP servers. Written in C and licensed under the MIT License, it can also be used as a library.