# Ruff vs SpotBugs

**Leader by Vioscale score:** Ruff

| Attribute | Ruff | SpotBugs |
|---|---|---|
| **Vioscale score** | 74 (76% (high)) | 53.7 (49% (low)) |
| activity.commits_last_30d | 100 | 34 |
| adoption.dependent_repos | 5,870 | 2,768 |
| adoption.github_stars | 49,341 | 3,925 |
| adoption.package_downloads_weekly | 77,677,334 | - |
| deployment.options | `{"self_hosted":true}` | `{"on_prem":true,"self_hosted":true}` |
| description.long | 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. | An open-source utility that examines Java source code to identify potential programming issues without executing it. It integrates with build tools and IDEs through plugins and supports community-contributed or custom analysis rules. |
| features.capabilities | `{"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}` | `{"autofix":false,"function":"static_analyzer","deployment":"cli_local","open_source":"oss","config_model":"rule_packs","custom_rules":true,"impl_language":"Java","pricing_model":"free","language_scope":"single_language","editor_integration":true}` |
| integrations.count | 6 | 6 |
| integrations.list | `[{"name":"Flake8"},{"name":"isort"},{"name":"Autoflake"},{"name":"Pyflakes"},{"name":"pycodestyle"},{"name":"Pylint"}]` | `[{"name":"Maven"},{"name":"Gradle"},{"name":"Eclipse"},{"name":"Ant"},{"name":"fb-contrib"},{"name":"find-sec-bugs"}]` |
| language.primary | Rust | Java |
| license.spdx | MIT | LGPL-2.1 |
| market.availability | `{"hqCountry":"US","primaryMarkets":["US"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"cli":true,"mac":true,"linux":true,"windows":true}` | `{"cli":true}` |
| pricing | - | `{"type":"open_source","sourceUrl":"https://spotbugs.github.io/","retrievedAt":"2026-08-14T08:33:37.010Z"}` |
| pricing.free_tier | - | yes |
| pricing.model | commercial | open_source |
| pricing.price_level | - | free |
| release.cadence_days | 7 | 24 |
| 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"}]` | `[{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.10.4","date":"2026-08-20T03:22:34Z","type":"stable","version":"4.10.4"},{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.10.3","date":"2026-07-12T23:54:13Z","type":"stable","version":"4.10.3"},{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.10.2","date":"2026-06-09T20:24:17Z","type":"stable","version":"4.10.2"},{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.10.1","date":"2026-06-08T13:19:51Z","type":"stable","version":"4.10.1"},{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.10.0","date":"2026-06-08T01:28:41Z","type":"stable","version":"4.10.0"},{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.9.8","date":"2025-10-18T16:45:29Z","type":"stable","version":"4.9.8"},{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.9.7","date":"2025-10-14T22:32:35Z","type":"stable","version":"4.9.7"},{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.9.6","date":"2025-09-17T02:07:29Z","type":"stable","version":"4.9.6"},{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.9.5","date":"2025-09-15T01:58:47Z","type":"stable","version":"4.9.5"},{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.9.4","date":"2025-08-10T00:26:10Z","type":"stable","version":"4.9.4"},{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.9.3","date":"2025-03-15T19:18:36Z","type":"stable","version":"4.9.3"},{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.9.2","date":"2025-03-01T20:12:52Z","type":"stable","version":"4.9.2"},{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.9.1","date":"2025-02-05T16:59:04Z","type":"stable","version":"4.9.1"},{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.9.0","date":"2025-01-16T05:16:00Z","type":"stable","version":"4.9.0"},{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.8.6","date":"2024-06-18T02:46:58Z","type":"stable","version":"4.8.6"},{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.8.5","date":"2024-05-03T23:22:14Z","type":"stable","version":"4.8.5"},{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.8.4","date":"2024-04-23T13:33:59Z","type":"stable","version":"4.8.4"},{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.8.3","date":"2023-12-12T10:47:36Z","type":"stable","version":"4.8.3"},{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.8.2","date":"2023-11-29T04:06:02Z","type":"stable","version":"4.8.2"},{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.8.1","date":"2023-11-07T02:19:27Z","type":"stable","version":"4.8.1"}]` |
| reliability.status_page | - | yes |
| security.gdpr | yes | - |
| security.scorecard | - | 5.1 |
| 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}` | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=com.github.spotbugs%3Aspotbugs-annotations&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Code Quality Tools)

| Capability | Ruff | SpotBugs |
|---|:--:|:--:|
| **Core** |  |  |
| Function | Linter | Static analyzer |
| Language scope | Single-language | Single-language |
| Implementation language | Rust | Java |
| **Capability** |  |  |
| Autofix | ✓ | ✗ |
| **Config** |  |  |
| Config model | - | Rule packs |
| **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 2026-09-01T17:19:47.597Z. "-" = undocumented, not absent.*