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Is there any program/plugin than accept a URL and display server side technology that a web site is useing (PHP/ASP, HTTP server, Host OS, database type, ...)?

Opera have an extension that shows some server side info, but is there any more complete tool?

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This website Builtwith can take a website and display the technologies used by it but I'm not sure it will have exactly everything your looking for


Also found a SO Post with a similar question that might be helpful

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