ESLint vs Ruff

ESLint9.4Visit Ruff9.2Visit

Higher score ESLint #1 in Linters 9.4/10 Free plan Free plan✓ 4 of 4 features Visit ESLint

vs

Ruff #2 in Linters 9.2/10 Free plan Free plan✓ 3 of 4 features Visit Ruff

• ESLint fits best

  JavaScript projects needing an extensible standard

• Ruff fits best

  Python teams wanting linting and formatting together

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Side by side

Feature	ESLint 9.4/10 Visit ↗	Ruff 9.2/10 Visit ↗
At a glance
Editor score	9.4	9.2
Ranking	#1 in Linters	#2 in Linters
Best for	JavaScript projects needing an extensible standard	Python teams wanting linting and formatting together
Pricing model	Free	Free
Starting price	Free plan	Free plan
Free plan	✓	✓
Free trial	—	—
Deployment	Self-hosted	Self-hosted
Support	Community, Docs	Docs
Integrations	12 integrations	10 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features ESLint 4/4 · Ruff 3/4
Autofix	✓	✓
Custom rules	✓ (best)	—
Security rules	✓	✓
CI support	✓	✓
Specs
Languages supported	1	1
IDE support	Ide	Ide
Our review
Pros	Free, open-source static analysis with automatic fixing Custom rules, plugins, parsers, and configurations Integrates with editors, build tools, CI, and Node.js	More than 900 built-in lint rules Automatic fixes and built-in Python formatting Editor, notebook, CI, pre-commit, and Docker integrations
Cons	Primary language scope is JavaScript and JSX Additional languages depend on plugins Autofix applies only to supported issues	Focused on Python rather than multiple languages Custom lint rules are not supported Third-party plugins are not supported
Our verdict	ESLint is an open-source static-analysis tool for identifying and fixing problems in JavaScript code. It analyzes code without executing it, reports rule violations, and can automatically fix many supported issues through the --fix… Read the review →	Ruff is an open-source Python linter and code formatter for developers and teams. It checks Python files with the ruff check command, automatically fixes supported violations, and formats Python code. Its focus suits Python projects that… Read the review →

Strengths and trade-offs

• ESLint — where it wins

  • Free, open-source static analysis with automatic fixing
  • Custom rules, plugins, parsers, and configurations
  • Integrates with editors, build tools, CI, and Node.js

  Where it doesn't

  • Primary language scope is JavaScript and JSX
  • Additional languages depend on plugins
  • Autofix applies only to supported issues

• Ruff — where it wins

  • More than 900 built-in lint rules
  • Automatic fixes and built-in Python formatting
  • Editor, notebook, CI, pre-commit, and Docker integrations

  Where it doesn't

  • Focused on Python rather than multiple languages
  • Custom lint rules are not supported
  • Third-party plugins are not supported

• ESLint9.4/10 · Free plan

  A free, extensible JavaScript linter with autofix, plugins, and broad developer-tool integrations.

  Visit ESLintFull verdict →
• Ruff9.2/10 · Free plan

  Free Python linting and formatting with more than 900 built-in rules.

  Visit RuffFull verdict →