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7/21/2026

Build a Website Tech Stack Scanner CLI in Go Using Wappalyzergo
Short summary
A step-by-step tutorial for building a website technology scanner CLI in Go using ProjectDiscovery's Wappalyzergo library. The tool fetches an HTTP response, fingerprints technologies from headers and body, and prints detected tech like Cloudflare, React, or Nginx. The guide covers setup, compilation, and suggestions for extending with JSON output and multi-target scanning.
- •Build a website tech stack scanner in under 50 lines of Go
- •Uses ProjectDiscovery's Wappalyzergo fingerprinting engine
- •Extensible with JSON output, CSV reporting, and multi-target scanning
Generated with AI, which can make mistakes.
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