Specifiction
For vendors
AdvertiseTop spots, featured rows, home sponsor Get listedAdd a product we don't cover yet Claim a listingFree: verify the domain, then correct your page Vendor dashboardNumbers, orders and placements
List your tool
Vendor dashboard
Tech riderRev. 29 Sept 2026

Ruff

Ch 077.2of 34 Code Formatting Tools
  1. 1Runs onLinux, Mac, self-hosted, Web, Windows
  2. 2CostsFree plan
2 lines stated Written from the maker's own pages: astral.sh
Visit site Alternatives
The Ruff homepage

Overview

Ruff is ranked #7 of 34 in code formatting tools on Specifiction. It runs on Linux, macOS, Self-hosted, Web, Windows. There is a free plan.

Ruff plans and pricing

All plans
Ruff Free Open-source Python linter and formatter · permissively licensed astral.sh · 29 Sept 2026

Compared on code formatting tools

Free plan
Yesdocs.astral.sh

Facts

Purpose
Ruff is a Python linter and code formatter written in Rust.docs.astral.sh · 29 Sept 2026
Speed
The maker describes Ruff as 10–100x faster than existing linters and formatters such as Flake8 and Black.docs.astral.sh · 29 Sept 2026
Linting rules
Ruff includes over 900 built-in rules, including native implementations of popular Flake8 plugins.docs.astral.sh · 29 Sept 2026
Automatic fixes
Ruff can automatically fix lint violations, including removing unused imports.docs.astral.sh · 29 Sept 2026
Formatter
Ruff’s formatter is designed as a drop-in replacement for Black, though the FAQ notes there may be differences at the margins.docs.astral.sh · 29 Sept 2026
Editor support
The built-in Ruff Language Server provides diagnostics, code actions to fix them, and formatting; the docs recommend pairing it with another Python language server for navigation and autocompletion.docs.astral.sh · 29 Sept 2026
Editor integrations
The setup guide documents integrations including VS Code, Sublime Text, PyCharm, and Zed.docs.astral.sh · 29 Sept 2026
CI integrations
Ruff documents integrations for GitHub Actions and GitLab CI/CD, and hooks for pre-commit.docs.astral.sh · 29 Sept 2026
Installation
Ruff can be installed using uv, pip, pipx, standalone installers, and package managers including Homebrew and Conda.docs.astral.sh · 29 Sept 2026
Docker
The maker publishes Ruff as a Docker image tagged by release and with a latest tag.docs.astral.sh · 29 Sept 2026
Configuration
Ruff supports configuration through pyproject.toml, ruff.toml, or .ruff.toml.docs.astral.sh · 29 Sept 2026
Notable limit
Ruff does not support custom or third-party lint rules.docs.astral.sh · 29 Sept 2026
Security
Ruff’s rules include a Bandit-derived group for detecting common security issues, including possible vulnerabilities in Python code.docs.astral.sh · 29 Sept 2026
Support
The editor setup documentation says setup instructions are provided on a best-effort basis and directs users to open an issue for assistance.docs.astral.sh · 29 Sept 2026
Maker
Astral says it builds high-performance developer tools for the Python ecosystem and that its tools are open source and permissively licensed.astral.sh · 29 Sept 2026

Best Ruff alternatives

See all 20
All accessCh 01 Accessibility Test Framework for Android Free planAndroidLinux Free to start7.4 All accessCh 02 Prettier Free planAPIBrowser Free to start7.4 All accessCh 03 Black Free planLinuxMac Free to start7.3 All accessCh 04 rustfmt Free planLinuxMac Free to start7.3 All accessCh 05 Biome Free planBrowserLinux Free to start7.2 All accessCh 06 gofmt Free planLinuxMac Free to start7.2

Where it ranks on Specifiction

Is Ruff yours?

Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.

Claim it free Promote Ruff

Sources