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Recon-ngOpenDoor
Free

Free and open source under the GPL.

 Free

Free and open source under GPL-3.0.

macOS, Linux, Command line Windows, macOS, Linux, Command line
  • Workspace database means results from many modules accumulate and correlate
  • Familiar interface for anyone who has used Metasploit
  • Combines directory discovery, subdomain enumeration, and bounded crawling
  • Includes response filtering and reporting workflows
  • Many modules need API keys from third-party services
  • Reconnaissance against organisations you are not engaged by can be unlawful
  • Intended for authorized testing
Downloadable app Downloadable app
Open source Open source
License: GPL-3.0 License: GPL-3.0-only
Not stated if an account is needed Not stated if an account is needed
Not stated if it works offline Not stated if it works offline

Checked September 22, 2026

Checked October 8, 2026

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