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• Google — The most widely used web search engine
• Bing — Microsoft’s search engine
• DuckDuckGo — Privacy-focused search engine
• Startpage — Google results with enhanced privacy
• Yahoo Search — Web search with integrated news and content
• Yandex — Russian search engine with strong image search
• Baidu — Leading Chinese search engine
• Swisscows — Family-friendly, privacy-based search
• Qwant — European privacy-focused engine
• Brave Search — Independent index, privacy-first
• Mojeek — Independent UK crawler-based search
• MetaGer — German metasearch engine with anonymization
• Ecosia — Eco-friendly search engine that funds tree planting
• Marginalia — Alternative search engine for the “small web”
• Ask.com — General purpose search engine
• Lycos — Legacy search and portal site
• Search.com — Meta search across engines
• All-in-One Search — Multi-engine meta search
• AllTheInternet — Web and multimedia search
• Etools — Swiss metasearch engine
• FaganFinder — Advanced metasearch utilities
• iZito — European metasearch engine
• MyAllSearch — Multi-source meta search
• WebCleaner - Search top internet search engines from one page

• Google Scholar — Search scholarly literature and academic papers
• Litmaps — Visual literature discovery and citation network
• Semantic Scholar — AI-powered academic search
• BASE — Bielefeld Academic Search Engine for scholarly resources
• CORE — Access millions of open access research papers
• WorldCat — Global library catalog

• Google Hacking Database (GHDB) — Community-curated Google dorks
• Pentest-Tools Google Hacking — Automate Google dorking
• Boolean Strings — Advanced boolean queries for OSINT
• Google Advanced Search — Google advanced search form
• Google Search Operators — Official operator reference
• Yandex Advanced Operators — Yandex operator reference
• Bing Search Operators — Bing operator reference
• DuckDuckGo Syntax — Search syntax and operators
• Baidu Advanced Search — Baidu operator guide

• Social Mention — Real-time social media search
• Google Social Search — Google-powered social media search
• Carrot2 — Clustered search results visualization
• DocJax — Document search engine
• PublicWWW — Search source code and analytics IDs
• osint.sh — Search exposed cloud buckets
• GrayHatWarfare — Public S3 bucket search
• I Search From — Google search simulator for location/device
• Marginalia — Alternative search engine focusing on smaller sites
• Media Search Tool — Adverse media OSINT search tool
• Shodan — Search for internet-connected devices
• Censys — Search infrastructure and SSL certificates
• FOFA — Internet-wide search engine
• ZoomEye — IoT and cyberspace search
• LeakIX — Search exposed services and databases
• Netlas.io — Internet-wide search and analytics
• Million Short — Search engine that omits top sites for discovery
• IsLegitSite — Check if a website is legit or scam
• Grep.app — Search Github indexed source code