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theHarvester vs Holehe: catalog facts
theHarvester	Holehe
Free The open-source software is available without a license fee. Hosting, hardware and…	Free The open-source tool is available without a license fee.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Combines several public-data sources into structured results.	Covers a long list of services from one command Useful for auditing where your own address is registered
Some sources need API credentials and may return incomplete data.	Site behaviour changes often, so results drift out of date Querying other people's addresses raises ethical and legal questions
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License not stated
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.