StackRadar - Website Technology Detector

About

Instantly see the complete tech stack behind any website — frameworks, analytics, CDNs, payment systems, and 26 more categories. StackRadar detects 300+ technologies with confidence scoring and version detection, all running 100% locally in your browser. No data ever leaves Chrome.

  WHAT YOU GET

  - Detect 300+ technologies across 30 categories (frameworks, CMS, analytics, CDN, payments, AI/ML, and more)
  - Confidence scoring shows how certain each detection is
  - Version detection identifies exact framework versions
  - Privacy grading rates each site's tracking footprint (A through F)
  - Change detection alerts you when a site's tech stack changes
  - One-click PDF reports for stakeholders and clients
  - CSV and JSON export for your workflows
  - Scan history with timeline tracking
  - Side-by-side site comparison (shared vs unique technologies)
  - Bulk scan up to 25 sites at once (Business tier)
  - Dark mode and light mode with system auto-detection

  PRIVACY YOU CAN VERIFY

  - All analysis runs locally inside your browser using fingerprint pattern matching
  - Zero network requests to external servers for analysis
  - No user tracking, no analytics collection, no browsing history sent anywhere
  - No account required to use the free tier
  - URLs and scan history encrypted at rest with AES-256-GCM

  FLEXIBLE PLANS

  - Free: 10 scans per day, 5 exports per day — everything you need for casual use
  - Pro ($9.99/mo): Unlimited scans and exports, PDF reports, change detection, priority support
  - Business ($19.99/mo): Bulk scanning, webhooks for Zapier/Make integrations, everything in Pro
  - Every install includes a 14-day Pro trial, no credit card required

  Install StackRadar and scan your first site in under 3 seconds. Your data stays yours.