# DeepSource vs Ruff

**Leader by Vioscale score:** Ruff

| Attribute | DeepSource | Ruff |
|---|---|---|
| **Vioscale score** | 55.7 (73% (medium)) | 74 (76% (high)) |
| activity.commits_last_30d | - | 100 |
| adoption.dependent_repos | - | 5,870 |
| adoption.github_stars | - | 49,341 |
| adoption.package_downloads_weekly | - | 77,677,334 |
| deployment.options | `{"cloud":true}` | `{"self_hosted":true}` |
| description.long | A code review platform combining 5,000+ deterministic analysis rules with AI agents to automatically detect security vulnerabilities, bugs, and quality issues in pull requests without requiring CI setup. | A fast Python linter built in Rust that consolidates multiple linting tools into a single interface. It supports over 500 rules, provides automated fixes for common issues, and runs significantly faster than traditional Python linters on even very large codebases. |
| features.capabilities | `{"autofix":true,"metrics":true,"function":"quality_platform","ci_gating":true,"deployment":"saas","incremental":true,"open_source":"closed","config_model":"zero_config","language_scope":"multi_language"}` | `{"autofix":true,"function":"linter","deployment":"cli_local","incremental":true,"open_source":"oss","impl_language":"Rust","pricing_model":"free","language_scope":"single_language","editor_integration":true}` |
| integrations.count | 5 | 6 |
| integrations.list | `[{"name":"GitHub"},{"name":"GitLab"},{"name":"Jira"},{"name":"Slack"},{"name":"Vanta"}]` | `[{"name":"Flake8"},{"name":"isort"},{"name":"Autoflake"},{"name":"Pyflakes"},{"name":"pycodestyle"},{"name":"Pylint"}]` |
| language.primary | - | Rust |
| license.spdx | - | MIT |
| market.availability | `{"primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | `{"hqCountry":"US","primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` |
| platform.support | `{"web":true}` | `{"cli":true,"mac":true,"linux":true,"windows":true}` |
| pricing | `{"type":"subscription","plans":[{"free":true,"name":"Free","summary":"Free","components":[{"kind":"fixed","amount":0,"period":"month","currency":"USD"}],"contactSales":false},{"free":false,"name":"Starter","summary":"$24/user/mo (annual) or $30/user/mo (monthly)","commitment":"annual","components":[{"kind":"per_unit","unit":"user","amount":24,"period":"month","currency":"USD"}],"contactSales":false}],"summary":"Free tier available. Paid plans from $24/user/mo annual.","currency":"USD","freeTier":true,"sourceUrl":"https://deepsource.com/blog/sca-pricing","retrievedAt":"2026-08-14T11:08:51.713Z","startingPrice":{"amount":24,"period":"month","currency":"USD"},"billingPeriods":["month","year"]}` | - |
| pricing.free_tier | yes | - |
| pricing.model | freemium | commercial |
| pricing.price_level | mid | - |
| pricing.transparent | yes | - |
| release.cadence_days | - | 7 |
| release.history | - | `[{"url":"https://github.com/astral-sh/ruff/releases/tag/0.16.4","date":"2026-08-20T17:44:56Z","type":"stable","version":"0.16.4"},{"url":"https://github.com/astral-sh/ruff/releases/tag/0.16.3","date":"2026-08-13T15:18:05Z","type":"stable","version":"0.16.3"},{"url":"https://github.com/astral-sh/ruff/releases/tag/0.16.2","date":"2026-08-07T13:31:55Z","type":"stable","version":"0.16.2"},{"url":"https://github.com/astral-sh/ruff/releases/tag/0.16.1","date":"2026-07-30T19:37:52Z","type":"stable","version":"0.16.1"},{"url":"https://github.com/astral-sh/ruff/releases/tag/0.16.0","date":"2026-07-23T19:12:22Z","type":"stable","version":"0.16.0"},{"url":"https://github.com/astral-sh/ruff/releases/tag/0.15.22","date":"2026-07-16T15:15:10Z","type":"stable","version":"0.15.22"},{"url":"https://github.com/astral-sh/ruff/releases/tag/0.15.21","date":"2026-07-09T20:02:30Z","type":"stable","version":"0.15.21"},{"url":"https://github.com/astral-sh/ruff/releases/tag/0.15.20","date":"2026-06-25T17:21:46Z","type":"stable","version":"0.15.20"},{"url":"https://github.com/astral-sh/ruff/releases/tag/0.15.19","date":"2026-06-24T01:11:40Z","type":"stable","version":"0.15.19"},{"url":"https://github.com/astral-sh/ruff/releases/tag/0.15.18","date":"2026-06-18T18:26:34Z","type":"stable","version":"0.15.18"},{"url":"https://github.com/astral-sh/ruff/releases/tag/0.15.17","date":"2026-06-11T17:57:00Z","type":"stable","version":"0.15.17"},{"url":"https://github.com/astral-sh/ruff/releases/tag/0.15.16","date":"2026-06-04T16:34:11Z","type":"stable","version":"0.15.16"},{"url":"https://github.com/astral-sh/ruff/releases/tag/0.15.15","date":"2026-05-28T14:18:02Z","type":"stable","version":"0.15.15"},{"url":"https://github.com/astral-sh/ruff/releases/tag/0.15.14","date":"2026-05-21T14:35:54Z","type":"stable","version":"0.15.14"},{"url":"https://github.com/astral-sh/ruff/releases/tag/0.15.13","date":"2026-05-14T13:45:27Z","type":"stable","version":"0.15.13"},{"url":"https://github.com/astral-sh/ruff/releases/tag/0.15.12","date":"2026-04-24T18:18:25Z","type":"stable","version":"0.15.12"},{"url":"https://github.com/astral-sh/ruff/releases/tag/0.15.11","date":"2026-04-16T18:47:31Z","type":"stable","version":"0.15.11"},{"url":"https://github.com/astral-sh/ruff/releases/tag/0.15.10","date":"2026-04-09T14:07:15Z","type":"stable","version":"0.15.10"},{"url":"https://github.com/astral-sh/ruff/releases/tag/0.15.9","date":"2026-04-02T18:18:12Z","type":"stable","version":"0.15.9"},{"url":"https://github.com/astral-sh/ruff/releases/tag/0.15.8","date":"2026-03-26T19:09:30Z","type":"stable","version":"0.15.8"}]` |
| reliability.status_page | yes | - |
| security.gdpr | yes | yes |
| security.soc2 | yes | - |
| security.vulnerabilities | - | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=ruff&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Code Quality Tools)

| Capability | DeepSource | Ruff |
|---|:--:|:--:|
| **Core** |  |  |
| Function | Quality platform | Linter |
| Language scope | Multi-language | Single-language |
| Implementation language | - | Rust |
| **Capability** |  |  |
| Autofix | ✓ | ✓ |
| **Config** |  |  |
| Config model | Zero-config | - |
| **Extensibility** |  |  |
| Custom rules | - | - |
| **Deployment** |  |  |
| Deployment | SaaS | CLI-local |
| **Delivery** |  |  |
| Editor integration | - | ✓ |
| CI / VCS gating | ✓ | - |
| **Insight** |  |  |
| Code metrics | ✓ | - |
| **Performance** |  |  |
| Incremental / monorepo aware | ✓ | ✓ |
| **Licensing** |  |  |
| Open-source | Closed | OSS |
| **Commercial** |  |  |
| Pricing model | - | Free |

*Source: Vioscale. Generated 2026-09-01T16:55:18.222Z. "-" = undocumented, not absent.*