Open-source alternative to BuiltWith and Wappalyzer lookups: technologies by category from several providers side by side, plus find companies using a technology. Next.js and looot.
open-source typescript mcp nextjs gtm b2b lead-generation tailwindcss techstack technology-lookup claude-code sales-intelligence wappalyzer-alternative tech-stack-detection builtwith-alternative technographics looot website-technologies
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Updated
Oct 14, 2026 - TypeScript