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SpiderFoot vs Amass: catalog facts
SpiderFoot	Amass
Free Free and open source under the MIT licence. A hosted SpiderFoot HX service is paid.	Free The software is free under its open-source licence. Hosting, hardware and external…
Windows, macOS, Linux, Self-hosted	Windows, macOS, Linux, Command line
Two hundred modules run automatically and correlate their findings Web interface with graphing, plus a command-line mode for automation	It combines passive open-source intelligence with active reconnaissance and stores the results in a graph database you…
Full coverage needs API keys for many third-party services Scanning organisations without authorisation can be unlawful	Active reconnaissance touches the target directly, so it must only be pointed at systems you are authorised to…
Downloadable app, Self-hosted	Downloadable app
Open source	Open source
License: MIT	License: Apache-2.0
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.