BuiltWith

Website profiler that reveals the tech stack behind any domain. Identify CMS, analytics, hosting, frameworks, and more — useful for OSINT, pentesting prep, and market intelligence. https://builtwith.com/

WHOIS History by WhoisXML

Tool to check domain ownership history. Access WHOIS records across 25B+ entries via lookup, API, or database download — useful for investigations, attribution, and threat research. https://whois-history.whoisxmlapi.com/

AnswerThePublic

Visualize the questions, queries, and phrases people use on search engines around any topic. Great for content research, SEO, and understanding public interest. https://answerthepublic.com/

AtSame IP

Track shared IP addresses to identify connections between online accounts or digital footprints. https://atsameip.intercode.ca/

Pentest-Tools.com

Online penetration testing platform offering a suite of tools for vulnerability scanning, exploitation, and reporting, designed to streamline security assessments for professionals. https://pentest-tools.com/information-gathering/google-hacking

DotDB.com

Explore all registered domain names, analyze keyword trends, and discover hidden branding opportunities, useful for investigations and marketing purposes. https://dotdb.com/

DorkGenius

A tool for generating custom Google, Bing, and DuckDuckGo search dorks, facilitating advanced searches to uncover sensitive information and enhance digital investigations. https://dorkgenius.com

Favihunter

An OSINT tool that discovers and monitors internet assets by analyzing favicon hashes across multiple search engines, aiding in identifying and tracking online assets. https://github.com/eremit4/favihunter