Shodan
The Shodan plugin tells you where the website is hosted (country, city), who owns the IP and what other services/ ports are open.
Inject jQuery into all frames on any page.
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Track rating movement over time to see whether quality signals remain stable.
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jQuery Injector injects jQuery onto each frame of a page, making jQuery available and usable in the dev console. QA Engineers crafting and testing CSS Selectors with Sizzle/jQuery pseudo-classes for test automation, as well as developers doing sandbox work, may find this tool useful.
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The Shodan plugin tells you where the website is hosted (country, city), who owns the IP and what other services/ ports are open.
VirusTotal and Google Threat Intelligence Browser Extension.
Tiny vulnerability scanner based on vulners.com vulnerability database. Passively scan websites while you surf internet!
Inject custom css to specified web page
OWASP Penetration Testing Kit
Extracts and collates links from web pages