Compare software

Unlighthouse vs Lighthouse: catalog facts
Unlighthouse	Lighthouse
Free Free and open source under the MIT licence, funded by sponsors.	Free The open-source tool is available without a license fee.
Command line	Windows, macOS, Linux, Web, Command line
Audits a whole site rather than one page Automatic URL discovery and parallel scanning	Turns vague performance complaints into a specific, prioritised list Runs in CI as well as in the browser, so regressions can be caught
Requires Node 22 or later Large sites still take time to scan	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
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: Apache-2.0
No account 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 23, 2026	Official website Full listing and sources Checked September 22, 2026

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