nginx [engine x] is a HTTP server and mail proxy server written by Igor Sysoev.
Dedicated and shared hosting programs from Japan.
These websites are related to sysken.or.jp in terms of content, traffic and structure
sil-web.co.jp
5suro.com
google.co.jp
geocities.jp
yoshifumi.net
suematsu.org
satomizu.com
yoshimasa.com