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How can I find out which web frameworks/java-script libraries a site uses, specially their versions from a web-browser like Firefox or Chrome?

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Not an answer, but there is no way to be 100% sure about the web framework they are using without having access to their servers. The best you can do is make guesses based on the structure of the website, or comments in code, etc. As for JavaScript libraries, you can just click View Source in your browser. :) – Sasha Chedygov May 31 '10 at 8:55
This is off-topic: superuser.com/faq Might be better suited for WebCheatSheet or something like that. – Bobby May 31 '10 at 10:22
this may be appropriate to Doctype, but i'm not very knowledgeable about that site. check their FAQ before posting. – quack quixote Jun 1 '10 at 2:00

closed as off topic by Bobby, Sathya♦, quack quixote Jun 1 '10 at 1:59

Questions on Super User are expected to relate to computer software or computer hardware within the scope defined in the FAQ. Consider editing the question or leaving comments for improvement if you believe the question can be reworded to fit within the scope. Read more about closed questions here.

1 Answer

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This is pretty good and does most/all of the work for you.

Detect CMS, framework and technologies being used by a website

Also this question over at Stack Overflow gives quite a few tips.

How do you determine what technology a website is built on?

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