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HackerTarget WhatWeb ScanWhatWeb
Freemium

Free analysis reports are offered, with paid plans for more scanning.

 Free

Free and open source under GPLv2.

Web Windows, macOS, Linux, Command line
  • Runs WhatWeb and Wappalyzer without a local install
  • Detects applications, web servers and other technologies
  • Fingerprints hundreds of web technologies via plugins
  • Adjustable aggression levels
  • Intended for authorized testing of sites you own or may assess
  • Heavier use sits behind paid plans
  • Command-line only
  • Intended only for authorized testing
Web application Downloadable app
Closed source Open source
License not stated License: GPL-2.0
No account needed No account needed
Needs internet Works offline

Checked September 23, 2026

Checked September 24, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.