Resource for Recognizing Framework/CMS From URL or Other Clues?

Question

I'm curious to know which web framework or content management system a website is using based upon clues from the URL, headers, content. Does anyone know of a resource on the web that would provide this? For example:

• .html -> maybe a flat-file
• .php -> something built using PHP, perhaps.
• .jsp -> something using Java Server Pages
• .asp -> Active Server Pages
• 0,2097,1-1-1928,00 -> Vignette CMS
• .do -> ??

Thanks.

Answer 1

Finding CMS by url

http://2ip.ru/cms/

enter URL in center input field and click big blue button below

Results in black - not found, in red - found

NOTE: May play around with url path: with http://, with or without www. part -- results may differ.

Answer 2

If you're not restricted to just the query string then there are a few other options. For example to identify a rails app:

Script, stylesheet and image tags tend to have a 10 digits number appended (this allows you to cache, and still change the file):

<script src="/javascripts/all.js?1236037318" type="text/javascript"></script>

You can also sometimes tell from the cookies what the framework is. For example rails apps tend to have a session cookie called _appName_session, and often you can find a flash contained.