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quick-lint-js vs Biome: catalog facts
quick-lint-js	Biome
Free Free and open source under GPL-3.0-or-later.	Free Free and open source, funded through Open Collective.
Windows, macOS, Linux, Web, Command line	Windows, macOS, Linux, Command line
Works with no configuration Very fast feedback while typing	Formatter and linter in one fast tool Close compatibility with Prettier formatting
Minimal rule set compared with ESLint No WebStorm support	Not a full replacement for every ESLint plugin Some formatting differs from Prettier
Downloadable app, Web application	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: MIT OR Apache-2.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 23, 2026

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