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Unlighthouse vs Yellow Lab Tools: catalog facts
Unlighthouse	Yellow Lab Tools
Free Free and open source under the MIT licence, funded by sponsors.	Free Free and open source under the GPL-2.0 licence.
Command line	Web, Self-hosted, Command line
Audits a whole site rather than one page Automatic URL discovery and parallel scanning	Checks front-end code quality as well as speed Detailed explanations of each issue
Requires Node 22 or later Large sites still take time to scan	Development has slowed, with the last repository push in early 2024 Docker image is maintained by a third party
Downloadable app	Downloadable app, Web application, Self-hosted
Open source	Open source
License: MIT	License: GPL-2.0
No account needed	No account 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 23, 2026

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