H2O - an optimized HTTP server with support for HTTP/1.x and HTTP/2
Copyright (c) 2014,2015 DeNA Co., Ltd., Kazuho Oku, Tatsuhiko Kubo, Domingo Alvarez Duarte, Nick Desaulniers, Marc Hörsken, Masahiro Nagano, Jeff Marrison, Daisuke Maki
H2O is a very fast HTTP server written in C, licensed under the MIT License. It can also be used as a library.
For more information, please refer to the documentation at h2o.github.io.