What's that web server running

Quickly find out what web server software a website is using.
 

What's that web server running Review

"What's that web server running?" provides a quick and easy way to determine what web server software a website is using. The program uses HTTP headers to determine what software, and often what operating system a site runs on. In some cases additional information about loaded modules such as PHP may be provided. This utility is provided completely free of charge by the makers of the SpamButcher spam filter.