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