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Ruff

Ruff lints Python with dramatic speed.

Free tierPrice verified 2026-09-30Visit site ↗
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Our verdict

Who it's for

Lightning-fast Python linting powered by Rust

Who should look elsewhere

Newer tool

Pros

  • +Fast Python linter
  • +Rust-based
  • +Replaces multiple tools
  • +Active development
  • +Good performance

Cons

  • −Newer tool
  • −Not all rules yet
  • −Configuration changes
  • −Learning curve
  • −Still maturing

Key features

  • ✓Python linter
  • ✓Extremely fast
  • ✓Rust-based
  • ✓Auto-fix
  • ✓Flake8 compatible
  • ✓Open source

Pricing

PlanPriceBillingNotes
Free$0month100% free and open source; MIT license; 10-100x faster than alternatives

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