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Lighthouse vs Unlighthouse: catalog facts
Lighthouse	Unlighthouse
Free The open-source tool is available without a license fee.	Free Free and open source under the MIT licence, funded by sponsors.
Windows, macOS, Linux, Web, Command line	Command line
Turns vague performance complaints into a specific, prioritised list Runs in CI as well as in the browser, so regressions can be caught	Audits a whole site rather than one page Automatic URL discovery and parallel scanning
Scores vary between runs and depend heavily on the machine and network A good score is not the same as a fast experience for real users	Requires Node 22 or later Large sites still take time to scan
Downloadable app	Downloadable app
Open source	Open source
License: Apache-2.0	License: MIT
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.