vioscale
Comparison

Biome vs Psalm

On the evidence we track, Psalm leads this comparison with a composite score of 81/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Biome full profile →Psalm full profile →
Machine formatsJSONMarkdownGraphQLor send Accept: application/json
Attribute comparison across 2 tools
Attribute72Biome81PsalmLeader
Vioscale score72 / 100low · 38%81 / 100low · 14%
Commits last 30d100-
Github stars25,4605,875
Package downloads weekly11,910,506-
Options{"cloud":true}{"self_hosted":true}
LongA fast formatter and linter for JavaScript, TypeScript, JSX, TSX, JSON, HTML, CSS, and GraphQL with 97% Prettier compatibility.A free and open-source static analysis tool for PHP that identifies type-related bugs and security vulnerabilities in code, with automatic fixing capabilities.
Capabilities{"autofix":true,"function":"linter_formatter","open_source":"oss","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}
PrimaryRustPHP
SpdxApache-2.0MIT
Support{"cli":true,"web":true}{"cli":true}
Pricing{"type":"open_source","freeTier":true,"sourceUrl":"https://biomejs.dev","retrievedAt":"2026-08-05T14:07:10.279Z"}{"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"}
Free tierYesYes
Modelcommercialcommercial
Price levelfreefree
Transparent-Yes
Cadence days61

Capabilities

Feature-by-feature on the axes that matter for code quality tools. “-” means undocumented, not absent.

Capability comparison for Code Quality Tools
CapabilityBiomePsalm
Core
FunctionLinter + formatterStatic analyzer
Language scopeMulti-languageSingle-language
Implementation language--
Capability
Autofix✓✓
Config
Config model-Config file
Extensibility
Custom rules-✓
Deployment
Deployment-CLI-local
Delivery
Editor integration✓✓
CI / VCS gating-✓
Insight
Code metrics--
Performance
Incremental / monorepo aware--
Licensing
Open-sourceOSSOSS
Commercial
Pricing modelFreeFree

Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.