# Prettier vs Psalm

**Leader by Vioscale score:** Psalm

| Attribute | Prettier | Psalm |
|---|---|---|
| **Vioscale score** | 75.8 (44% (low)) | 81.4 (14% (low)) |
| activity.commits_last_30d | 100 | - |
| adoption.github_stars | 52,163 | 5,875 |
| adoption.package_downloads_weekly | 117,427,495 | - |
| deployment.options | `{"cloud":true,"self_hosted":true}` | `{"self_hosted":true}` |
| description.long | A code formatter that removes original styling and reprints code to conform to a consistent style, supporting multiple programming languages and integrating with most editors. | A free and open-source static analysis tool for PHP that identifies type-related bugs and security vulnerabilities in code, with automatic fixing capabilities. |
| features.capabilities | `{"autofix":true,"function":"formatter","open_source":"oss","config_model":"zero_config","pricing_model":"free","language_scope":"multi_language","editor_integration":true}` | `{"autofix":true,"function":"static_analyzer","ci_gating":true,"deployment":"cli_local","open_source":"oss","config_model":"config_file","custom_rules":true,"pricing_model":"free","language_scope":"single_language","editor_integration":true}` |
| integrations.count | 7 | - |
| integrations.list | `[{"name":"Emacs"},{"name":"Nova"},{"name":"Sublime Text"},{"name":"Vim"},{"name":"Visual Studio"},{"name":"VS Code"},{"name":"WebStorm"}]` | - |
| language.primary | JavaScript | PHP |
| license.spdx | MIT | MIT |
| platform.support | `{"cli":true,"web":true}` | `{"cli":true}` |
| pricing | `{"type":"open_source","summary":"Free and open source","freeTier":true,"sourceUrl":"https://prettier.io","retrievedAt":"2026-08-05T14:12:35.830Z"}` | `{"type":"open_source","plans":[{"free":true,"name":"Open Source","description":"Free and open-source static analysis tool for PHP","contactSales":false}],"summary":"Free and open-source. Optional paid support contracts available.","freeTier":true,"sourceUrl":"https://psalm.dev/","retrievedAt":"2026-08-03T22:32:46.041Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | commercial | commercial |
| pricing.price_level | free | free |
| pricing.transparent | yes | yes |
| release.cadence_days | 1 | 1 |

## Capabilities (Code Quality Tools)

| Capability | Prettier | Psalm |
|---|:--:|:--:|
| **Core** |  |  |
| Function | Formatter | Static analyzer |
| Language scope | Multi-language | Single-language |
| Implementation language | - | - |
| **Capability** |  |  |
| Autofix | ✓ | ✓ |
| **Config** |  |  |
| Config model | Zero-config | Config file |
| **Extensibility** |  |  |
| Custom rules | - | ✓ |
| **Deployment** |  |  |
| Deployment | - | 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 2026-08-07T00:01:03.255Z. "-" = undocumented, not absent.*