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://nginx.org/download/nginx-0.8.35.tar.gz (linux)
http://nginx.org/download/nginx-0.8.35.zip (win)

Changes with nginx 0.8.35                                        01 Apr 2010

   *) Change: now the charset filter runs before the SSI filter.

   *) Feature: the "chunked_transfer_encoding" directive.

   *) Bugfix: an "&" character was not escaped when it was copied in
      arguments part in a rewrite rule.

   *) Bugfix: nginx might be terminated abnormally while a signal
      processing or if the directive "timer_resolution" was used on
      platforms which do not support kqueue or eventport notification
      methods.
      Thanks to George Xie and Maxim Dounin.

   *) Bugfix: if temporary files and permanent storage area resided at
      different file systems, then permanent file modification times were
      incorrect.
      Thanks to Maxim Dounin.

   *) Bugfix: ngx_http_memcached_module might issue the error message
      "memcached sent invalid trailer".
      Thanks to Maxim Dounin.

   *) Bugfix: nginx could not built zlib-1.2.4 library using the library
      sources.
      Thanks to Maxim Dounin.

   *) Bugfix: a segmentation fault occurred in a worker process, if there
      was large stderr output before FastCGI response; the bug had
      appeared in 0.8.34.
      Thanks to Maxim Dounin.