# mypy vs SpotBugs

**Leader by vioscaleAI score:** mypy

| Attribute | mypy | SpotBugs |
|---|---|---|
| **vioscaleAI score** | 69.4 (66% (medium)) | 54.9 (48% (low)) |
| activity.commits_last_30d | 100 | 72 |
| adoption.dependent_repos | 52,771 | 2,768 |
| adoption.github_stars | 20,682 | 3,954 |
| adoption.package_downloads_weekly | 42,892,033 | - |
| content.faq | `[{"answer":"A type analysis tool for Python that enables code to transition from pure dynamic typing to statically-typed code through annotations, with error detection at check time. Code runs with negligible performance impact and developers can incrementally adopt static types in existing projects. It is indexed under Code Quality Tools.","source":"https://mypy-lang.org","question":"What is mypy?","confidence":0.6},{"answer":"mypy is open source, so it can be self-hosted and used at no licence cost. Pricing changes often, so verify at source before relying on it.","source":"https://mypy-lang.org","question":"Is mypy free to use?","confidence":0.6},{"answer":"mypy supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://mypy-lang.org","question":"What platforms does mypy support?","confidence":0.6}]` | `[{"answer":"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. It is indexed under Code Quality Tools.","source":"https://spotbugs.github.io/","question":"What is SpotBugs?","confidence":0.6},{"answer":"SpotBugs is open source, so it can be self-hosted and used at no licence cost. It is released under the LGPL-2.1 licence. Pricing changes often, so verify at source before relying on it.","source":"https://spotbugs.github.io/","question":"Is SpotBugs free to use?","confidence":0.6},{"answer":"SpotBugs supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://spotbugs.github.io/","question":"What platforms does SpotBugs support?","confidence":0.6},{"answer":"Yes. SpotBugs can be deployed on-premise and self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://spotbugs.github.io/","question":"Can SpotBugs be self-hosted?","confidence":0.6},{"answer":"We have confirmed 6 integrations for SpotBugs, including Maven, Gradle, Eclipse, Ant, fb-contrib and find-sec-bugs. This is what we could verify from public sources, so the vendor may support others we have not indexed.","source":"https://spotbugs.github.io/","question":"What does SpotBugs integrate with?","confidence":0.6},{"answer":"Yes. SpotBugs is published under the LGPL-2.1 licence, a copyleft licence, so check its terms before embedding it in a closed-source product. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/spotbugs/spotbugs","question":"Is SpotBugs open source?","confidence":0.95}]` |
| deployment.options | `{"self_hosted":true}` | `{"on_prem":true,"self_hosted":true}` |
| description.long | A static type checker that analyzes Python code to catch type errors before runtime. Supports gradual typing, allowing you to mix static and dynamic typing and incrementally add type hints to existing codebases. | SpotBugs performs static analysis on Java code to identify potential bugs and code quality issues. |
| features.capabilities | `{"autofix":false,"metrics":false,"function":"type_checker","ci_gating":true,"deployment":"cli_local","incremental":true,"open_source":"oss","custom_rules":false,"impl_language":"Python","pricing_model":"free","language_scope":"single_language","editor_integration":true}` | `{"autofix":false,"function":"static_analyzer","ci_gating":true,"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 | 1 | 3 |
| integrations.list | `[{"name":"VS Code","native":true}]` | `[{"name":"Maven"},{"name":"Gradle"},{"name":"Eclipse"},{"name":"Ant"},{"name":"fb-contrib"},{"name":"find-sec-bugs"},{"name":"VS Code","native":true}]` |
| language.primary | Python | Java |
| license.spdx | - | LGPL-2.1 |
| platform.support | `{"cli":true}` | `{"cli":true}` |
| pricing | `{"type":"open_source","sourceUrl":"https://mypy-lang.org","retrievedAt":"2026-08-14T13:45:01.127Z"}` | `{"type":"open_source","sourceUrl":"https://spotbugs.github.io/","retrievedAt":"2026-08-14T08:33:37.010Z"}` |
| pricing.free_tier | - | yes |
| pricing.model | open_source | open_source |
| pricing.price_level | free | free |
| release.cadence_days | - | 27 |
| release.history | - | `[{"url":"https://github.com/spotbugs/spotbugs/releases/tag/4.10.5","date":"2026-10-12T03:43:33Z","type":"stable","version":"4.10.5"},{"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"}]` |
| reliability.status_page | - | yes |
| security.scorecard | 6.8 | 4.5 |
| security.vulnerabilities | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=mypy&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 | mypy | SpotBugs |
|---|:--:|:--:|
| **Core** |  |  |
| Function | Type checker | Static analyzer |
| Language scope | Single-language | Single-language |
| Implementation language | Python | 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: vioscaleAI. Generated 2026-10-16T19:03:43.810Z. "-" = undocumented, not absent.*