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Stack Spy

ExtensionDeveloper Tools9 users
Item media 1 (screenshot) for Stack Spy

Overview

Detect the full tech stack of any website — frameworks, analytics, CDN, payments and more.

Stack Spy scans any website you visit and reveals its complete technology stack in seconds. 🔍 What it detects • Frameworks & libraries (React, Next.js, Vue, Angular…) • Analytics & marketing (GA4, Segment, Mixpanel, HubSpot…) • CDN & hosting (Cloudflare, Vercel, AWS CloudFront…) • Payments (Stripe, PayPal, Braintree…) • CMS & ecommerce (WordPress, Shopify, Webflow…) • Security, fonts, chat widgets and 7,500+ more technologies 🚀 How it works Open any website, click the Stack Spy icon. Detection runs locally in your browser — no page reloads, no tracking. Results are saved to a shareable public page at stack-spy.com/companies/[domain]. 🔗 Features • 7,500 detection patterns • HTTP header analysis • Shareable /companies/ pages • Search by technology across all indexed sites • Social profiles detected automatically

Details

  • Version
    2.2.0
  • Updated
    April 23, 2026
  • Offered by
    stack-spy
  • Size
    901KiB
  • Languages
    English
  • Developer
    stack-spy
    32 Rue Vieille du Temple Paris 75004 FR
    Email
    hellostackspy@gmail.com
  • Non-trader
    This developer has not identified itself as a trader. For consumers in the European Union, please note that consumer rights do not apply to contracts between you and this developer.

Privacy

Manage extensions and learn how they're being used in your organization

Stack Spy has disclosed the following information regarding the collection and usage of your data. More detailed information can be found in the developer's privacy policy.

Stack Spy handles the following:

Authentication information
Web history

This developer declares that your data is

  • Not being sold to third parties, outside of the approved use cases
  • Not being used or transferred for purposes that are unrelated to the item's core functionality
  • Not being used or transferred to determine creditworthiness or for lending purposes
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