Free toolsUpdated 5/13/2026

Free tech stack detector — what is this site built with?

1,000 free signup credits = 1,000 URLs scanned for tech stack. Useful for B2B prospect filtering (only Shopify stores, only HubSpot customers) and competitive research.

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What we detect

~60 technologies across 8 categories: frameworks, CMS, analytics, marketing, hosting, payments, e-commerce, backend hints.

Tools mentioned in this guide

Tech Stack Detector

Pay per result

Website Scraper

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How Kavex compares to alternatives

We don't hide from comparisons. Each link below is an honest side-by-side breakdown.

Kavex vs Clay

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