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httpx vs Web Check: catalog facts
httpx	Web Check
Free The open-source software is available without a license fee. Hosting, hardware and…	Free Free and open source.
Windows, macOS, Linux, Command line	Web, Self-hosted
Collects response information from lists of hosts or URLs.	Many checks combined in one report Can be self-hosted with Docker
This is the Go probing tool, not the Python library with the same name.	Running it yourself takes some setup Only looks at publicly available information
Downloadable app	Self-hosted
Open source	Open source
License: MIT	License not stated
Not stated if an account is needed	No account 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 23, 2026

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