Compare software

Holehe vs Recon-ng: catalog facts
Holehe	Recon-ng
Free The open-source tool is available without a license fee.	Free Free and open source under the GPL.
Windows, macOS, Linux, Command line	macOS, Linux, Command line
Covers a long list of services from one command Useful for auditing where your own address is registered	Workspace database means results from many modules accumulate and correlate Familiar interface for anyone who has used Metasploit
Site behaviour changes often, so results drift out of date Querying other people's addresses raises ethical and legal questions	Many modules need API keys from third-party services Reconnaissance against organisations you are not engaged by can be unlawful
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
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
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 22, 2026

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