Ruff
Extremely fast Python linter and formatter written in Rust — consolidates rules from Flake8, isort, pyupgrade, and more.
81
Hero Score
Popularity
88
Performance
100
Ecosystem
50
Maturity
84
Dev Experience
83
⭐ 47,752 stars⬇ 51.0M downloads/wkFirst release: Aug 2022Last release: May 2026
Async Support: YesPlugin Extensions: MediumSpeed: Very fastDoc Quality: Very highLearning Curve: Easy
Pros
- • Blazing-fast linting and formatting (10-100x faster than alternatives); ideal for large projects and CI/CD ; Actively developed by Astral with rapid adoption and growing ecosystem
- • Consolidates multiple tools (Flake8, isort, pycodestyle, pyupgrade) into one unified interface
- • Excellent developer experience with clear messages, autofix support, and minimal configuration
Cons
- • Some rules are less configurable than Pylint's granular options
- • Newer tool with smaller plugin ecosystem compared to mature alternatives
- • Written in Rust, so extending with custom Python checks is not possible