# flake8 vs StyleLint

**Leader by vioscaleAI score:** StyleLint

| Attribute | flake8 | StyleLint |
|---|---|---|
| **vioscaleAI score** | 64 (66% (medium)) | 77.2 (71% (medium)) |
| activity.commits_last_30d | 21 | 36 |
| adoption.dependent_repos | 153,063 | 200,392 |
| adoption.github_stars | 3,828 | 11,531 |
| adoption.package_downloads_weekly | 9,519,717 | 10,966,597 |
| content.faq | `[{"answer":"flake8 is an open-source Python linter that combines multiple style-checking tools to verify code compliance with PEP 8 and detect errors. It uses a plugin architecture for extensibility and is commonly integrated into development workflows and CI/CD pipelines. It is indexed under Code Quality Tools.","source":"https://flake8.pycqa.org/","question":"What is flake8?","confidence":0.6},{"answer":"flake8 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://flake8.pycqa.org/","question":"Is flake8 free to use?","confidence":0.6},{"answer":"flake8 supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://flake8.pycqa.org/","question":"What platforms does flake8 support?","confidence":0.6},{"answer":"Yes. flake8 can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://flake8.pycqa.org/","question":"Can flake8 be self-hosted?","confidence":0.6},{"answer":"We have confirmed 3 integrations for flake8, including pycodestyle, pyflakes and mccabe. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://flake8.pycqa.org/","question":"What does flake8 integrate with?","confidence":0.6},{"answer":"Yes. flake8 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://pypi.org/pypi/flake8/json","question":"Is flake8 open source?","confidence":0.9}]` | `[{"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 | flake8 is an open-source Python linter that combines multiple style-checking tools to verify code compliance with PEP 8 and detect errors. It uses a plugin architecture for extensibility and is commonly integrated into development workflows and CI/CD pipelines. | 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":false,"metrics":true,"function":"linter","ci_gating":true,"deployment":"cli_local","open_source":"oss","config_model":"config_file","custom_rules":true,"impl_language":"Python","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 | 3 | - |
| integrations.list | `[{"name":"pycodestyle"},{"name":"pyflakes"},{"name":"mccabe"},{"name":"pre-commit","native":true,"category":"ci","direction":"inbound"}]` | - |
| language.primary | Python | JavaScript |
| license.spdx | MIT | MIT |
| platform.support | `{"cli":true}` | `{"cli":true}` |
| pricing | `{"type":"free","freeTier":true,"sourceUrl":"https://flake8.pycqa.org/","retrievedAt":"2026-09-10T16:03:57.147Z"}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://stylelint.io/","retrievedAt":"2026-09-10T16:00:24.713Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | free | open_source |
| pricing.price_level | free | free |
| pricing.transparent | yes | yes |
| release.cadence_days | - | 7 |
| release.history | - | `[{"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 | 7.4 |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=flake8&per_page=100","last_12m":0,"max_severity":null}` | `{"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 | flake8 | StyleLint |
|---|:--:|:--:|
| **Core** |  |  |
| Function | Linter | Linter + formatter |
| Language scope | Single-language | Single-language |
| Implementation language | Python | 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 2026-10-16T08:26:58.061Z. "-" = undocumented, not absent.*