nginx（发音同engine x）是一款由俄罗斯程序员Igor Sysoev所开发轻量级的网页服务器、反向代理服务器以及电子邮件（IMAP/POP3）代理服务器。起初是供俄国大型的门户网站及搜索引擎 Rambler（俄语：Рамблер）使用。此软件BSD-like协议下发行，可以在UNIX、GNU/Linux、BSD、Mac OS X、Solaris，以及Microsoft Windows等操作系统中运行。下载：
http://nginx.org/download/nginx-0.9.7.tar.gz (linux)
http://nginx.org/download/nginx-0.9.7.zip (win)

Changes with nginx 0.9.7                                         04 Apr 2011

    *) Feature: now keepalive connections may be closed premature, if there
       are no free worker connections.
       Thanks to Maxim Dounin.

    *) Feature: the "rotate" parameter of the "image_filter" directive.
       Thanks to Adam Bocim.

    *) Bugfix: a case when a backend in "fastcgi_pass", "scgi_pass", or
       "uwsgi_pass" directives is given by expression and refers to a
       defined upstream.