# RuboCop vs StyleLint

**Leader by vioscaleAI score:** StyleLint

| Attribute | RuboCop | StyleLint |
|---|---|---|
| **vioscaleAI score** | 63.9 (50% (medium)) | 77.2 (71% (medium)) |
| activity.commits_last_30d | 100 | 36 |
| adoption.dependent_repos | 115,529 | 200,392 |
| adoption.github_stars | 12,913 | 11,531 |
| adoption.package_downloads_weekly | - | 10,966,597 |
| content.faq | `[{"answer":"RuboCop is an open-source Ruby linter and formatter that enforces code style based on the Ruby community style guide. It detects code quality issues and can automatically fix many of them, with extensive configuration options and extensibility through community plugins. It is indexed under Code Quality Tools.","source":"https://rubocop.org/","question":"What is RuboCop?","confidence":0.6},{"answer":"RuboCop is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Pricing changes often, so verify at source before relying on it.","source":"https://rubocop.org/","question":"Is RuboCop free to use?","confidence":0.6},{"answer":"RuboCop supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://rubocop.org/","question":"What platforms does RuboCop support?","confidence":0.6},{"answer":"We have confirmed 13 integrations for RuboCop, including rubocop-performance, rubocop-rails, rubocop-rspec, rubocop-minitest, rubocop-rake, rubocop-sequel, rubocop-thread_safety and rubocop-capybara, plus 5 more. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://rubocop.org/","question":"What does RuboCop integrate with?","confidence":0.6},{"answer":"Yes. RuboCop is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/rubocop/rubocop","question":"Is RuboCop open source?","confidence":0.95}]` | `[{"answer":"Stylelint is an open-source CSS linter with over 100 built-in rules that helps developers catch errors, enforce conventions, and automatically fix issues. It supports plugins for custom rules and can parse CSS-like languages such as SCSS and Sass. It is indexed under Code Quality Tools.","source":"https://stylelint.io/","question":"What is StyleLint?","confidence":0.6},{"answer":"StyleLint is open source, so it can be self-hosted and used at no licence cost. It is released under the MIT licence. Pricing changes often, so verify at source before relying on it.","source":"https://stylelint.io/","question":"Is StyleLint free to use?","confidence":0.6},{"answer":"StyleLint supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://stylelint.io/","question":"What platforms does StyleLint support?","confidence":0.6},{"answer":"Yes. StyleLint can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://stylelint.io/","question":"Can StyleLint be self-hosted?","confidence":0.6},{"answer":"Yes. StyleLint is published under the MIT licence, a permissive licence that generally allows commercial use and modification. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/stylelint/stylelint","question":"Is StyleLint open source?","confidence":0.99}]` |
| deployment.options | `{"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | An open-source linter and formatter for Ruby that enforces the community style guide, identifies potential bugs, and can automatically correct many issues. | A CSS linter that validates stylesheets against built-in and custom rules to ensure error-free and consistent code, with automatic fixing capabilities and support for CSS-like languages. |
| features.capabilities | `{"autofix":true,"metrics":true,"function":"linter_formatter","ci_gating":true,"deployment":"cli_local","open_source":"oss","config_model":"config_file","custom_rules":true,"impl_language":"Ruby","pricing_model":"free","language_scope":"single_language","editor_integration":true}` | `{"autofix":true,"metrics":true,"function":"linter_formatter","ci_gating":true,"deployment":"cli_local","incremental":true,"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 | 14 | - |
| integrations.list | `[{"name":"rubocop-performance"},{"name":"rubocop-rails"},{"name":"rubocop-rspec"},{"name":"rubocop-minitest"},{"name":"rubocop-rake"},{"name":"rubocop-sequel"},{"name":"rubocop-thread_safety"},{"name":"rubocop-capybara"},{"name":"rubocop-factory_bot"},{"name":"rubocop-rspec_rails"},{"name":"rubocop-i18n"},{"name":"Eglot"},{"name":"Helix"},{"name":"Flycheck"},{"name":"VS Code","native":true,"category":"editor","direction":"bidirectional"},{"name":"RubyMine","native":true,"category":"editor","direction":"bidirectional"},{"name":"Emacs","native":true,"category":"editor","direction":"bidirectional"},{"name":"Neovim","native":true,"category":"editor","direction":"bidirectional"},{"name":"Zed","native":true,"category":"editor","direction":"bidirectional"}]` | - |
| language.primary | Ruby | JavaScript |
| license.spdx | MIT | MIT |
| platform.support | `{"cli":true}` | `{"cli":true}` |
| pricing | `{"type":"open_source","summary":"Free and open source","freeTier":true,"sourceUrl":"https://rubocop.org/","retrievedAt":"2026-08-14T08:31:22.550Z"}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://stylelint.io/","retrievedAt":"2026-09-10T16:00:24.713Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | open_source | open_source |
| pricing.price_level | free | free |
| pricing.transparent | yes | yes |
| release.cadence_days | 16 | 7 |
| release.history | `[{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.92.0","date":"2026-10-10T09:34:41Z","type":"stable","version":"v1.92.0"},{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.91.0","date":"2026-09-10T13:55:54Z","type":"stable","version":"v1.91.0"},{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.90.0","date":"2026-08-24T11:40:21Z","type":"stable","version":"v1.90.0"},{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.89.0","date":"2026-08-04T09:00:37Z","type":"stable","version":"v1.89.0"},{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.88.2","date":"2026-07-08T06:22:30Z","type":"stable","version":"v1.88.2"},{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.88.1","date":"2026-07-01T09:52:01Z","type":"stable","version":"v1.88.1"},{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.88.0","date":"2026-06-16T05:10:59Z","type":"stable","version":"v1.88.0"},{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.87.0","date":"2026-05-30T08:52:19Z","type":"stable","version":"v1.87.0"},{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.86.2","date":"2026-05-14T05:26:06Z","type":"stable","version":"v1.86.2"},{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.86.1","date":"2026-04-09T06:12:37Z","type":"stable","version":"v1.86.1"},{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.86.0","date":"2026-03-23T10:39:38Z","type":"stable","version":"v1.86.0"},{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.85.1","date":"2026-03-05T10:22:56Z","type":"stable","version":"v1.85.1"},{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.85.0","date":"2026-02-26T09:50:24Z","type":"stable","version":"v1.85.0"},{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.84.2","date":"2026-02-12T07:25:18Z","type":"stable","version":"v1.84.2"},{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.84.1","date":"2026-02-03T01:55:56Z","type":"stable","version":"v1.84.1"},{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.84.0","date":"2026-01-27T09:57:17Z","type":"stable","version":"v1.84.0"},{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.82.1","date":"2025-12-24T08:47:02Z","type":"stable","version":"v1.82.1"},{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.82.0","date":"2025-12-17T10:25:17Z","type":"stable","version":"v1.82.0"},{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.81.7","date":"2025-10-31T09:01:14Z","type":"stable","version":"v1.81.7"},{"url":"https://github.com/rubocop/rubocop/releases/tag/v1.81.6","date":"2025-10-21T07:34:59Z","type":"stable","version":"v1.81.6"}]` | `[{"url":"https://github.com/stylelint/stylelint/releases/tag/17.16.0","date":"2026-10-01T10:26:01Z","type":"stable","version":"17.16.0"},{"url":"https://github.com/stylelint/stylelint/releases/tag/17.15.0","date":"2026-09-04T14:01:44Z","type":"stable","version":"17.15.0"},{"url":"https://github.com/stylelint/stylelint/releases/tag/17.14.1","date":"2026-07-20T01:16:07Z","type":"stable","version":"17.14.1"},{"url":"https://github.com/stylelint/stylelint/releases/tag/17.14.0","date":"2026-06-25T15:22:34Z","type":"stable","version":"17.14.0"},{"url":"https://github.com/stylelint/stylelint/releases/tag/17.13.0","date":"2026-06-06T15:44:09Z","type":"stable","version":"17.13.0"},{"url":"https://github.com/stylelint/stylelint/releases/tag/17.12.0","date":"2026-05-20T10:49:28Z","type":"stable","version":"17.12.0"},{"url":"https://github.com/stylelint/stylelint/releases/tag/17.11.1","date":"2026-05-14T09:23:25Z","type":"stable","version":"17.11.1"},{"url":"https://github.com/stylelint/stylelint/releases/tag/17.11.0","date":"2026-05-05T11:38:30Z","type":"stable","version":"17.11.0"},{"url":"https://github.com/stylelint/stylelint/releases/tag/17.10.0","date":"2026-05-03T10:17:10Z","type":"stable","version":"17.10.0"},{"url":"https://github.com/stylelint/stylelint/releases/tag/17.9.1","date":"2026-04-27T13:06:58Z","type":"stable","version":"17.9.1"},{"url":"https://github.com/stylelint/stylelint/releases/tag/17.9.0","date":"2026-04-23T06:54:22Z","type":"stable","version":"17.9.0"},{"url":"https://github.com/stylelint/stylelint/releases/tag/17.8.0","date":"2026-04-15T11:50:13Z","type":"stable","version":"17.8.0"},{"url":"https://github.com/stylelint/stylelint/releases/tag/17.7.0","date":"2026-04-12T13:07:47Z","type":"stable","version":"17.7.0"},{"url":"https://github.com/stylelint/stylelint/releases/tag/17.6.0","date":"2026-03-26T09:39:45Z","type":"stable","version":"17.6.0"},{"url":"https://github.com/stylelint/stylelint/releases/tag/17.5.0","date":"2026-03-19T16:32:30Z","type":"stable","version":"17.5.0"},{"url":"https://github.com/stylelint/stylelint/releases/tag/17.4.0","date":"2026-02-25T13:22:00Z","type":"stable","version":"17.4.0"},{"url":"https://github.com/stylelint/stylelint/releases/tag/17.3.0","date":"2026-02-13T11:03:54Z","type":"stable","version":"17.3.0"},{"url":"https://github.com/stylelint/stylelint/releases/tag/17.2.0","date":"2026-02-10T09:47:26Z","type":"stable","version":"17.2.0"},{"url":"https://github.com/stylelint/stylelint/releases/tag/17.1.1","date":"2026-02-03T15:54:46Z","type":"stable","version":"17.1.1"},{"url":"https://github.com/stylelint/stylelint/releases/tag/17.1.0","date":"2026-01-30T12:37:43Z","type":"stable","version":"17.1.0"}]` |
| security.scorecard | 5.1 | 7.4 |
| security.vulnerabilities | `{"count":1,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=rubygems&package_name=rubocop&per_page=100","last_12m":0,"max_severity":"LOW"}` | `{"count":1,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=npm&package_name=stylelint&per_page=100","last_12m":0,"max_severity":"LOW"}` |

## Capabilities (Code Quality Tools)

| Capability | RuboCop | StyleLint |
|---|:--:|:--:|
| **Core** |  |  |
| Function | Linter + formatter | Linter + formatter |
| Language scope | Single-language | Single-language |
| Implementation language | Ruby | 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: vioscaleAI. Generated 2026-10-16T20:13:16.534Z. "-" = undocumented, not absent.*