NerdyData

Search which websites use specific SaaS technologies or HTML/JS snippets — ideal for tech footprinting, competitor intel, and large-scale site discovery (Shopify, HubSpot, Stripe, etc.). https://www.nerdydata.com/

Hetty

Open-source HTTP toolkit for security research. Designed as an alternative to Burp Suite Pro, it’s useful for infosec, bug bounty, and even large-scale web scraping in OSINT workflows. https://github.com/dstotijn/hetty

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/

InfoTrail

Web tool to trace digital footprints. Search across domains, emails, phone numbers, IPs, and crypto addresses to map connections and investigate online identities. https://infotrail.io/

NFOMINER

Tool for extracting hidden metadata from online documents (PDF, Word, Excel, Images) https://github.com/techenthusiast167/NFOMINER

MW Geofind

Search YouTube by location for geotagged videos. Find videos near you or anywhere in the world. https://mattw.io/youtube-geofind/location