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-0.8.16.tar.gz(linux)
http://sysoev.ru/nginx/nginx-0.8.16.zip(win)

Changes with nginx 0.8.16 22 Sep 2009

*) Feature: the "image_filter_transparency" directive.

*) Bugfix: "addition_types" directive was incorrectly named
"addtion_types".

*) Bugfix: resolver cache poisoning.
Thanks to Matthew Dempsky.

*) Bugfix: memory leak in resolver.
Thanks to Matthew Dempsky.

*) Bugfix: invalid request line in $request variable was written in
access_log only if error_log was set to "info" or "debug" level.

*) Bugfix: in PNG alpha-channel support in the
ngx_http_image_filter_module.

*) Bugfix: nginx always added "Vary: Accept-Encoding" response header
line, if both "gzip_static" and "gzip_vary" were on.

*) Bugfix: in UTF-8 encoding support by "try_files" directive in
nginx/Windows.

*) Bugfix: in "post_action" directive usage; the bug had appeared in
0.8.11.
Thanks to Igor Artemiev.