Stack Spy

by stack-spy · Developer Tools

Manifest V3 Free

View in Chrome Web Store Data as of 16 Oct 2026

See the tech stack of any website instantly.

Users

+6 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#138K

#115K among extensions

Version

3.0.0

updated 5 Jun 2026

Users

monthly, 6 months

Latest, 16 Oct 2026: 26 usersMove the mouse over the chart for any month

Ratings count

monthly, 6 months

Latest, 16 Oct 2026: 0 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Stack Spy

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