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httpx vs WhatWeb: catalog facts
httpx	WhatWeb
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source under GPLv2.
Windows, macOS, Linux, Command line	Windows, macOS, Linux, Command line
Collects response information from lists of hosts or URLs.	Fingerprints hundreds of web technologies via plugins Adjustable aggression levels
This is the Go probing tool, not the Python library with the same name.	Command-line only Intended only for authorized testing
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-2.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 24, 2026

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