# Checkstyle vs ESLint

**Leader by Vioscale score:** ESLint

| Attribute | Checkstyle | ESLint |
|---|---|---|
| **Vioscale score** | 59 (54% (medium)) | 73.6 (79% (high)) |
| activity.commits_last_30d | 100 | 50 |
| adoption.dependent_repos | 1,425 | 1,569,244 |
| adoption.github_stars | 9,001 | 27,484 |
| adoption.package_downloads_weekly | - | 160,098,819 |
| deployment.options | `{"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | 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. | 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. |
| features.capabilities | `{"autofix":false,"metrics":true,"function":"static_analyzer","ci_gating":true,"deployment":"cli_local","open_source":"oss","config_model":"config_file","custom_rules":true,"impl_language":"Java","pricing_model":"free","language_scope":"single_language"}` | `{"autofix":true,"function":"linter_formatter","ci_gating":true,"deployment":"cli_local","open_source":"oss","config_model":"config_file","custom_rules":true,"impl_language":"JavaScript","pricing_model":"free","language_scope":"single_language","editor_integration":true}` |
| integrations.count | 2 | 2 |
| integrations.list | `[{"name":"Maven"},{"name":"Ant"}]` | `[{"name":"eslint-plugin-react"},{"name":"eslint-plugin-unicorn"}]` |
| language.primary | Java | JavaScript |
| license.spdx | LGPL-2.1 | MIT |
| platform.support | `{"cli":true}` | `{"cli":true}` |
| pricing | `{"type":"free","sourceUrl":"https://checkstyle.org/","retrievedAt":"2026-08-14T08:38:14.583Z"}` | `{"type":"open_source","plans":[{"free":true,"name":"Open Source","features":["Find issues in JavaScript code","Automatically fix problems","Custom parsers","Custom rules","Text editor integration","CI pipeline integration"],"description":"Free open source linter","contactSales":false}],"summary":"Free open source","freeTier":true,"sourceUrl":"https://eslint.org","retrievedAt":"2026-08-05T14:08:29.561Z"}` |
| pricing.free_tier | - | yes |
| pricing.model | commercial | commercial |
| pricing.price_level | free | free |
| pricing.transparent | yes | - |
| release.cadence_days | 14 | 13 |
| release.history | `[{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-14.0.0","date":"2026-08-18T13:09:20Z","type":"stable","version":"checkstyle-14.0.0"},{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-13.11.0","date":"2026-08-16T21:52:20Z","type":"stable","version":"checkstyle-13.11.0"},{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-13.10.0","date":"2026-08-09T17:48:41Z","type":"stable","version":"checkstyle-13.10.0"},{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-13.9.0","date":"2026-07-27T01:04:59Z","type":"stable","version":"checkstyle-13.9.0"},{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-13.8.0","date":"2026-07-12T02:55:15Z","type":"stable","version":"checkstyle-13.8.0"},{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-13.7.0","date":"2026-06-28T15:13:54Z","type":"stable","version":"checkstyle-13.7.0"},{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-13.6.0","date":"2026-06-15T03:24:52Z","type":"stable","version":"checkstyle-13.6.0"},{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-13.5.0","date":"2026-05-30T20:22:13Z","type":"stable","version":"checkstyle-13.5.0"},{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-13.4.2","date":"2026-05-02T04:07:51Z","type":"stable","version":"checkstyle-13.4.2"},{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-13.4.1","date":"2026-04-27T12:43:10Z","type":"stable","version":"checkstyle-13.4.1"},{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-13.4.0","date":"2026-03-29T17:41:44Z","type":"stable","version":"checkstyle-13.4.0"},{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-13.3.0","date":"2026-02-28T17:36:40Z","type":"stable","version":"checkstyle-13.3.0"},{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-13.2.0","date":"2026-02-05T20:28:40Z","type":"stable","version":"checkstyle-13.2.0"},{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-13.1.0","date":"2026-01-31T17:26:20Z","type":"stable","version":"checkstyle-13.1.0"},{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-13.0.0","date":"2026-01-04T23:48:39Z","type":"stable","version":"checkstyle-13.0.0"},{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-12.3.1","date":"2025-12-31T15:42:54Z","type":"stable","version":"checkstyle-12.3.1"},{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-12.3.0","date":"2025-12-13T15:50:49Z","type":"stable","version":"checkstyle-12.3.0"},{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-12.2.0","date":"2025-11-30T13:55:29Z","type":"stable","version":"checkstyle-12.2.0"},{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-12.1.2","date":"2025-11-11T16:40:51Z","type":"stable","version":"checkstyle-12.1.2"},{"url":"https://github.com/checkstyle/checkstyle/releases/tag/checkstyle-12.1.1","date":"2025-10-26T14:12:24Z","type":"stable","version":"checkstyle-12.1.1"}]` | `[{"url":"https://github.com/eslint/eslint/releases/tag/v10.9.1","date":"2026-08-24T18:18:59Z","type":"stable","version":"v10.9.1"},{"url":"https://github.com/eslint/eslint/releases/tag/v10.9.0","date":"2026-08-21T13:05:50Z","type":"stable","version":"v10.9.0"},{"url":"https://github.com/eslint/eslint/releases/tag/v10.8.1","date":"2026-08-07T20:16:24Z","type":"stable","version":"v10.8.1"},{"url":"https://github.com/eslint/eslint/releases/tag/v10.8.0","date":"2026-07-24T20:15:28Z","type":"stable","version":"v10.8.0"},{"url":"https://github.com/eslint/eslint/releases/tag/v10.7.0","date":"2026-07-10T21:22:56Z","type":"stable","version":"v10.7.0"},{"url":"https://github.com/eslint/eslint/releases/tag/v9.39.5","date":"2026-07-10T20:41:58Z","type":"stable","version":"v9.39.5"},{"url":"https://github.com/eslint/eslint/releases/tag/v10.6.0","date":"2026-06-26T20:09:26Z","type":"stable","version":"v10.6.0"},{"url":"https://github.com/eslint/eslint/releases/tag/v10.5.0","date":"2026-06-12T17:54:47Z","type":"stable","version":"v10.5.0"},{"url":"https://github.com/eslint/eslint/releases/tag/v10.4.1","date":"2026-05-29T20:32:39Z","type":"stable","version":"v10.4.1"},{"url":"https://github.com/eslint/eslint/releases/tag/v10.4.0","date":"2026-05-15T14:11:22Z","type":"stable","version":"v10.4.0"},{"url":"https://github.com/eslint/eslint/releases/tag/v10.3.0","date":"2026-05-01T15:39:48Z","type":"stable","version":"v10.3.0"},{"url":"https://github.com/eslint/eslint/releases/tag/v10.2.1","date":"2026-04-17T20:17:51Z","type":"stable","version":"v10.2.1"},{"url":"https://github.com/eslint/eslint/releases/tag/v10.2.0","date":"2026-04-03T20:36:28Z","type":"stable","version":"v10.2.0"},{"url":"https://github.com/eslint/eslint/releases/tag/v10.1.0","date":"2026-03-20T15:31:47Z","type":"stable","version":"v10.1.0"},{"url":"https://github.com/eslint/eslint/releases/tag/v10.0.3","date":"2026-03-06T22:53:26Z","type":"stable","version":"v10.0.3"},{"url":"https://github.com/eslint/eslint/releases/tag/v9.39.4","date":"2026-03-06T21:46:54Z","type":"stable","version":"v9.39.4"},{"url":"https://github.com/eslint/eslint/releases/tag/v10.0.2","date":"2026-02-23T21:43:46Z","type":"stable","version":"v10.0.2"},{"url":"https://github.com/eslint/eslint/releases/tag/v10.0.1","date":"2026-02-20T15:15:18Z","type":"stable","version":"v10.0.1"},{"url":"https://github.com/eslint/eslint/releases/tag/v9.39.3","date":"2026-02-20T13:52:17Z","type":"stable","version":"v9.39.3"},{"url":"https://github.com/eslint/eslint/releases/tag/v10.0.0","date":"2026-02-06T22:30:54Z","type":"stable","version":"v10.0.0"}]` |
| reliability.status_page | yes | - |
| security.scorecard | 6.7 | 6.3 |
| security.vulnerabilities | `{"count":2,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=com.puppycrawl.tools%3Acheckstyle&per_page=100","last_12m":0,"max_severity":"MODERATE"}` | `{"count":2,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=eslint&per_page=100","last_12m":1,"max_severity":"MODERATE"}` |

## Capabilities (Code Quality Tools)

| Capability | Checkstyle | ESLint |
|---|:--:|:--:|
| **Core** |  |  |
| Function | Static analyzer | Linter + formatter |
| Language scope | Single-language | Single-language |
| Implementation language | Java | JavaScript |
| **Capability** |  |  |
| Autofix | ✗ | ✓ |
| **Config** |  |  |
| Config model | Config file | Config file |
| **Extensibility** |  |  |
| Custom rules | ✓ | ✓ |
| **Deployment** |  |  |
| Deployment | CLI-local | CLI-local |
| **Delivery** |  |  |
| Editor integration | - | ✓ |
| CI / VCS gating | ✓ | ✓ |
| **Insight** |  |  |
| Code metrics | ✓ | - |
| **Performance** |  |  |
| Incremental / monorepo aware | - | - |
| **Licensing** |  |  |
| Open-source | OSS | OSS |
| **Commercial** |  |  |
| Pricing model | Free | Free |

*Source: Vioscale. Generated 2026-09-01T17:39:13.375Z. "-" = undocumented, not absent.*