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ESLint

Free#1 of 33 in Linters

ESLint: A free, extensible JavaScript linter with autofix, plugins, and broad developer-tool integrations. Ranked #1 of 33 in Linters by our editors (9.4/10); pricing: Free plan; best for javaScript projects needing an extensible standard.

9.4/10Editor score
Visit ESLint
ESLint9.4 Visit ESLint

At a glance

  • Editor score
    9.4 / 10
  • Pricing
    Free plan
  • Best for
    JavaScript projects needing an extensible standard
  • Free plan
    Yes
  • Paid from
    Free
  • CI support
    Yes
  • Founded
    2013
  • Facts checked
    21 Sep 2026
ESLint screenshot

  • 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

Our verdict on ESLint

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 command-line option. Its primary scope is JavaScript and JSX, making it a strong fit for browser and server projects with or without frameworks. Teams can run it from the command line, connect it to editors and build tools, or call it through the Node.js API.

The pricing model is straightforward: ESLint is free and open source. The published product details describe no paid tiers, so there is no plan-by-plan feature split to weigh. Its main value comes from extensibility rather than commercial packaging. Developers can load plugins at runtime, define custom rules and configurations, use custom parsers and language plugins, and add security rules. This makes ESLint suitable for teams that want a shared standard they can adapt to project-specific requirements. Projects needing a broader language footprint should expect to extend the core JavaScript and JSX focus through plugins.

ESLint also fits into a broad development workflow. It integrates with Visual Studio Code, JetBrains IDEs, Visual Studio, and Sublime Text, while build-tool connections include Webpack, Rollup, and Grunt. Git pre-commit hooks support checks before changes are committed, and continuous integration usage supports automated review in delivery workflows. The tool's 2013 founding year adds a maturity signal for teams choosing an established JavaScript linting approach. Choose ESLint when configurable rules, autofix, editor support, and CI usage matter. Choose an alternative when the primary requirement is native analysis across languages beyond its JavaScript and JSX focus.

Your product? Our editors can test ESLint in depth and publish a review, labelled as paid · from $149/mo →

ESLint pricing

Plans Free planFree Free to use — no paid tier required for the core job.
See plans on eslint.org

ESLint fact sheet

Free planYes
Paid fromFree
Languages supported1
AutofixYes
Custom rulesYes
Security rulesYes
IDE supportIde
CI supportYes
DeploymentSelf-hosted
SupportCommunity, Docs
Built forSolo, Small business, Mid-market, Enterprise (editorial estimate)
Integrations12 integrations: Visual Studio Code, JetBrains IDEs, Visual Studio, Sublime Text, Vim, Neovim … See all →
PricingFree plan
Websiteeslint.org
Facts checked21 Sep 2026

ESLint integrations

ESLint lists 12 integrations on its own site.

  • Visual Studio Code
  • JetBrains IDEs
  • Visual Studio
  • Sublime Text
  • Vim
  • Neovim
  • Emacs
  • Eclipse IDE
  • Grunt
  • Webpack
  • Rollup
  • Git hooks

See all ESLint integrations →

Alternatives to ESLint

See all ESLint alternatives →

ESLint vs the competition

Compare ESLint with any tool side by side →

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Featured on iTechGuides

Featured on iTechGuides — ESLint 9.4/10

ESLint is listed in our Linters directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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