nginx（发音同 engine x）是一款轻量级的Web 服务器／反向代理服务器及电子邮件（IMAP/POP3）代理服务器，并在一个 BSD-like 协议下发行。由俄罗斯的程序设计师Igor Sysoev所开发，最初供俄国大型的入口网站及搜寻引擎Rambler（俄文：Рамблер）使用。其特点是占有内存少，并发能力强，事实上nginx的并发能力确实在同类型的网页伺服器中表现较好。目前中国大陆使用nginx网站用户有：新浪、网易、腾讯,另外知名的微网志Plurk也使用nginx。下载:
http://sysoev.ru/nginx/nginx-0.8.13.tar.gz(linux)
http://sysoev.ru/nginx/nginx-0.8.12.zip(win)
Changes with nginx 0.8.13 31 Aug 2009

*) Bugfix: in the "aio sendfile" directive. the bug had appeared in
0.8.12.

*) Bugfix: nginx could not be built without the --with-file-aio option
on FreeBSD; the bug had appeared in 0.8.12.

Changes with nginx 0.8.12 31 Aug 2009

*) Feature: the "sendfile" parameter in the "aio" directive on FreeBSD.

*) Bugfix: in try_files; the bug had appeared in 0.8.11.

*) Bugfix: in memcached; the bug had appeared in 0.8.11.