Comparison

Checkstyle vs ESLint

On the evidence we track, ESLint leads this comparison with a composite score of 74/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Machine formatsJSONMarkdownGraphQLor send Accept: application/json
Checkstyle61
ESLint74
Score
Vioscale score
Checkstyle61 / 100medium · 54%
ESLint74 / 100high · 79%
Pricing
Free tier
Checkstyle
ESLint
Model
Checkstylecommercial
Price level
Checkstylefree
ESLintfree
Transparent
Checkstyle
ESLint
Integrations
Count
Checkstyle2
ESLint2
Reliability
Status page
Checkstyle
ESLint
Adoption
Dependent repos
Checkstyle1,425
ESLint1,569,244
Github stars
Checkstyle9,001
ESLint27,484
Package downloads weekly
Checkstyle
Activity
Commits last 30d
Checkstyle100
ESLint50
Release
Cadence days
Checkstyle14
ESLint13
History
Checkstyle20 items
ESLint20 items
License
Spdx
CheckstyleLGPL-2.1
ESLintMIT
Language
Primary
CheckstyleJava

Capabilities

Feature-by-feature on the axes that matter for code quality tools. “-” means undocumented, not absent.

Core
Function
CheckstyleStatic analyzer
ESLintLinter + formatter
Language scope
CheckstyleSingle-language
ESLintSingle-language
Implementation language
CheckstyleJava
ESLintJavaScript
Capability
Autofix
Checkstyle
ESLint
Config
Config model
CheckstyleConfig file
ESLintConfig file
Extensibility
Custom rules
Checkstyle
ESLint
Deployment
Deployment
CheckstyleCLI-local
ESLintCLI-local
Delivery
Editor integration
Checkstyle-
ESLint
CI / VCS gating
Checkstyle
ESLint
Insight
Code metrics
Checkstyle
ESLint-
Performance
Incremental / monorepo aware
Checkstyle-
ESLint-
Licensing
Open-source
CheckstyleOSS
ESLintOSS
Commercial
Pricing model
CheckstyleFree
ESLintFree

What each one is

The product in its own terms, so the numbers below have context.

Checkstyle

A development tool that automatically scans Java code to verify adherence to coding standards, detecting style violations, design problems, and formatting issues. Supports customizable rule sets and integrates with build tools and IDEs.

Independently observed

ESLint

Leader

An open-source linter and fixer for JavaScript and JSX that runs locally in editors and CI pipelines. It uses AST analysis to catch problems and can automatically fix many issues, with full support for custom rules and extensibility.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Checkstyle

Free
as of verify ↗

ESLint

Leader
Open sourceFree tier

Free open source

  • Open SourceFree
    • Find issues in JavaScript code
    • Automatically fix problems
    • Custom parsers
    • Custom rules
    • Text editor integration
    • +1 more
as of verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platforms
CLI
Checkstyle
ESLint
Deployment
Self-hosted
Checkstyle
ESLint

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Checkstyle

2 total
  • Maven
  • Ant
Independently observed

ESLint

Leader
2 total
  • eslint-plugin-react
  • eslint-plugin-unicorn
Independently observed

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.