Comparison

Prettier 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.

Prettier full profile →Psalm full profile →

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Attribute comparison across 2 tools
Attribute	Prettier	PsalmLeader
Vioscale score	76 / 100low · 44%	81 / 100low · 14%
Commits last 30dactivity.commits_last_30d	100	-
Github starsadoption.github_stars	52,163	5,875
Package downloads weeklyadoption.package_downloads_weekly	117,427,495	-
Optionsdeployment.options	{"cloud":true,"self_hosted":true}	{"self_hosted":true}
Longdescription.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.
Capabilitiesfeatures.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}
Countintegrations.count	7	-
Listintegrations.list	[{"name":"Emacs"},{"name":"Nova"},{"name":"Sublime Text"},{"name":"Vim"},{"name":"Visual Studio"},{"name":"VS Code"},{"name":"WebStorm"}]	-
Primarylanguage.primary	JavaScript	PHP
Spdxlicense.spdx	MIT	MIT
Supportplatform.support	{"cli":true,"web":true}	{"cli":true}
Pricingpricing	{"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"}
Free tierpricing.free_tier	Yes	Yes
Modelpricing.model	commercial	commercial
Price levelpricing.price_level	free	free
Transparentpricing.transparent	Yes	Yes
Cadence daysrelease.cadence_days	1	1

Capabilities

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

Capability comparison for 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

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