OWASP ZAP

Free open-source web app security scanner

⭐ 4.4/5 (6400 reviews)

About OWASP ZAP

OWASP ZAP (Zed Attack Proxy) is the world's most widely used free, open-source web application security scanner maintained by the OWASP Foundation.

Key Features

  • Automated web app scanning
  • Intercepting proxy
  • Active and passive scanning
  • REST API for automation
  • Ajax Spider for JS apps
  • Marketplace for add-ons

✅ Pros

  • Free and open-source
  • OWASP maintained
  • Good for CI/CD integration
  • Active community

❌ Cons

  • Slower than commercial scanners
  • False positive tuning needed
  • UI is dated
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