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Developer Builds Lightweight Website Tech-Stack Detector Using Plain HTTP Requests

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A developer has released an open-source tool that identifies a website's technology stack — including CMS, ecommerce platform, JS frameworks, CDN, and analytics — using a single plain HTTP fetch, with no headless browser required. The tool, built on Crawlee's CheerioCrawler, inspects response headers, script sources, and HTML meta tags against a hand-written signature table covering around 30 technologies across seven categories. It is designed to return empty results rather than incorrect guesses when no signature matches, prioritising accuracy over coverage. The project draws conceptual inspiration from Wappalyzer but intentionally stays smaller and more precise, with each new technology requiring just one additional function. The tool is available on GitHub and also runs as a hosted Apify actor requiring no local setup.

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Developer Builds Lightweight Website Tech-Stack Detector Using Plain HTTP Requests · ShortSingh