Lightning-fast Python linting powered by Rust
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Tracked since2025
0 reviews trackedThe Bottom Line
Entry price
Free, no paid tier
Biggest pro
Fast Python linter
Biggest con
Newer tool
TL;DR - Ruff
- Ruff is an extremely fast Python linter and formatter written in Rust
- It replaces Flake8, isort, and Black with 10-100x faster performance
- Completely free and open-source
Pricing: Free forever
Best for: Individuals & startups
What is Ruff?
Ruff lints Python with dramatic speed. Rust-powered Python linting-Python tools reimagined for performance.
The speed is transformative. The compatibility is growing. The adoption is accelerating.
Python projects wanting faster linting adopt Ruff for performance improvement.
Available on: Web
Pros & Cons
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 linterExtremely fastRust-basedAuto-fixFlake8 compatibleOpen source
Pricing Plans
Pricing checked Jul 10, 2026
Free
Free
- 100% free and open source
- MIT license
- 10-100x faster than alternatives
- 800+ built-in rules
- Replaces Flake8, Black, isort
- Written in Rust
Reviews
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Ruff FAQ
How does Ruff improve Python code quality?
Ruff lints Python code with dramatic speed, helping developers quickly identify and fix issues. This performance improvement allows for more frequent and efficient code quality checks within development workflows.
Which teams benefit most from using Ruff?
Teams working on Python projects that require faster linting will find Ruff particularly beneficial. It helps improve performance in development and testing workflows, making it suitable for projects prioritizing speed and efficiency in code review.
How is Ruff's performance compared to other linters?
Ruff is a fast Python linter, powered by Rust, which reimagines Python tools for performance. This Rust-based architecture provides good performance for linting tasks, often outperforming traditional Python-based linters.
What kind of trade-offs should users consider when adopting Ruff?
As a newer and still maturing tool, Ruff may not yet include all possible linting rules. Users should also be aware that adopting Ruff might involve configuration changes and a learning curve due to its distinct approach.
Does Ruff include a free tier?
Ruff is free to use, meaning there is no paid plan required to access its features. This makes it an accessible option for all Python developers looking for a fast linter.
Can Ruff replace multiple existing Python development tools?
Yes, Ruff is designed to replace multiple existing Python development tools, streamlining the linting process. Its active development and growing compatibility aim to consolidate various functions into a single, high-performance solution.
Source: docs.astral.sh