ESLint

Self-hosted · API · Extension

Freedom report

Two barsScore 6.3

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely0 of 6 device platforms
DocumentedPlans, terms and facts published

ESLint is ranked #9 of 33 in linters on Freedom251. It runs on API, Browser extension, Self-hosted. There is a free plan.

ESLint plans and pricing

All plans

Open source ESLint Free JavaScript linting · npm installation · extensible rules and plugins eslint.org · 30 Sept 2026

Compared on linters

Free plan: Yes
Languages supported: 1
Autofix: Yes
Custom rules: Yes
Security rules: Yes
IDE support: ide
CI support: Yes

Best ESLint alternatives

See all 20

Two bars Biome Free tier No. 1Free6.6 Two bars Cppcheck Free tier No. 2Free6.6 Two bars PMD Free tier No. 3Free6.6 Two bars Ruff Free tier No. 4Free6.6 Two bars Astral Free tier No. 5Free6.5 Two bars golangci-lint Free tier No. 6Free6.5

The record

Purpose: ESLint statically analyzes JavaScript code to find and fix problems.
Open source: ESLint is an open source JavaScript linting utility originally created by Nicholas C. Zakas in June 2013.
Pluggability: Every ESLint rule is pluggable, and additional rules and formatters can be loaded at runtime.
Automatic fixes: Many problems ESLint finds can be automatically fixed with syntax-aware fixes.
Customization: Users can preprocess code, use custom parsers, and write custom rules alongside built-in rules.
Node.js requirement: ESLint requires Node.js ^20.19.0, ^22.13.0, or >=24 with SSL and ICU support.
Command line and API: ESLint provides a command-line interface and a Node.js API for programmatic linting.
Editor integrations: Official documentation lists integrations for Visual Studio Code, JetBrains IDEs, Vim, Neovim, Emacs, Sublime Text, and other editors.
Build and CI integrations: Documented integrations include Grunt, Webpack, Rollup, Git hooks, and CI-oriented tools such as Mega-Linter.
Language ecosystem: Plugins can add support for JavaScript extensions, TypeScript, React, Angular, Markdown, and other languages or frameworks.
Security reporting: Security vulnerabilities should be reported through GitHub's create-an-advisory form.
Version support: The ESLint team supports the current major version continuously and the previous version with limited support for six months.
Commercial support: Commercial support is available through Tidelift for current and maintenance releases and HeroDevs for end-of-life releases.
Governance: ESLint is part of the OpenJS Foundation, which provides legal infrastructure and owns related intellectual property while not running day-to-day operations.
Price from: Free

Where it ranks on Freedom251

Best Linters in 2026#9 of 33

Is ESLint yours?

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

Claim it free Promote ESLint

Sources

eslint.org· checked 30 Sept 2026
eslint.org/docs/latest/about/· checked 30 Sept 2026
eslint.org/docs/latest/use/getting-started· checked 30 Sept 2026
eslint.org/docs/latest/use/core-concepts/· checked 30 Sept 2026
eslint.org/docs/latest/use/integrations· checked 30 Sept 2026
eslint.org/docs/latest/contribute/report-security-· checked 30 Sept 2026
eslint.org/version-support/· checked 30 Sept 2026
eslint.org/docs/latest/maintain/overview· checked 30 Sept 2026