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

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Details

Version
2.2.0
Updated
April 23, 2026
Flag concern
Offered by
stack-spy
Size
901KiB
Languages
English
Developer
stack-spy
6 rue guynemer Saint-Gratien 95210 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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