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Ruff vs autopep8: catalog facts
Ruff	autopep8
Free The open-source application is available without a license fee.	Free Free and open source under the MIT license.
Windows, macOS, Linux	Command line
Linting, formatting and fix support in one tool	Fixes most formatting issues reported by pycodestyle Can format files in place
It does not replace running your program or its tests.	Requires pycodestyle
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: MIT
Not stated if an account is 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 22, 2026	Official website Full listing and sources Checked October 8, 2026

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