Comparison

Checkstyle vs mypy

On the evidence we track, mypy leads this comparison with a composite score of 72/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.

Checkstyle full profile →mypy full profile →

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Checkstyle61

★mypy72

Attribute comparison across 2 tools
Attribute	Checkstyle	mypyLeader
Vioscale score	61 / 100medium · 54%	72 / 100medium · 60%
Pricing
Modelpricing.model	commercial	open_source
Price levelpricing.price_level	free	free
Transparentpricing.transparent	✓	-
Integrations
Countintegrations.count	2	-
Security
Scorecardsecurity.scorecard	6.7	6.5
Vulnerabilitiessecurity.vulnerabilities	Count: 2 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=com.puppycrawl.tools%3Acheckstyle&per_page=100 · Last 12m: 0 · Max severity: MODERATE	Count: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=mypy&per_page=100 · Last 12m: 0
Reliability
Status pagereliability.status_page	✓	-
Adoption
Dependent reposadoption.dependent_repos	1,425	52,771
Github starsadoption.github_stars	9,001	20,603
Package downloads weeklyadoption.package_downloads_weekly	-	48,604,416
Activity
Commits last 30dactivity.commits_last_30d	100	27
Release
Cadence daysrelease.cadence_days	14	-
Historyrelease.history	20 items	-
License
Spdxlicense.spdx	LGPL-2.1	-
Language
Primarylanguage.primary	Java	Python

Score

Vioscale score

Checkstyle61 / 100medium · 54%

mypy72 / 100medium · 60%

Pricing

Model

Checkstylecommercial

mypyopen_source

Price level

Checkstylefree

mypyfree

Transparent

Checkstyle✓

mypy–

Integrations

Count

Checkstyle2

mypy–

Security

Scorecard

Checkstyle6.7

mypy6.5

Vulnerabilities

CheckstyleCount: 2 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=com.puppycrawl.tools%3Acheckstyle&per_page=100 · Last 12m: 0 · Max severity: MODERATE

mypyCount: 0 · Source: https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=pypi&package_name=mypy&per_page=100 · Last 12m: 0

Reliability

Status page

Checkstyle✓

mypy–

Adoption

Dependent repos

Checkstyle1,425

mypy52,771

Github stars

Checkstyle9,001

mypy20,603

Package downloads weekly

Checkstyle–

mypy48,604,416

Activity

Commits last 30d

Checkstyle100

mypy27

Release

Cadence days

Checkstyle14

mypy–

History

Checkstyle20 items

mypy–

License

Spdx

CheckstyleLGPL-2.1

mypy–

Language

Primary

CheckstyleJava

mypyPython

Capabilities

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

Capability comparison for Code Quality Tools
Capability	Checkstyle	mypy
Core
Function	Static analyzer	Type checker
Language scope	Single-language	Single-language
Implementation language	Java	Python
Capability
Autofix	✗	✗
Config
Config model	Config file	-
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

Core

Function

CheckstyleStatic analyzer

mypyType checker

Language scope

CheckstyleSingle-language

mypySingle-language

Implementation language

CheckstyleJava

mypyPython

Capability

Autofix

Checkstyle✗

mypy✗

Config

Config model

CheckstyleConfig file

mypy-

Extensibility

Custom rules

Checkstyle✓

mypy✗

Deployment

CheckstyleCLI-local

mypyCLI-local

Delivery

Editor integration

Checkstyle-

mypy✓

CI / VCS gating

Checkstyle✓

mypy✓

Insight

Code metrics

Checkstyle✓

mypy✗

Performance

Incremental / monorepo aware

Checkstyle-

mypy✗

Licensing

Open-source

CheckstyleOSS

mypyOSS

Commercial

Pricing model

CheckstyleFree

mypyFree

What each one is

The product in its own terms, so the numbers below have context.

Checkstyle

A development tool that automatically scans Java code to verify adherence to coding standards, detecting style violations, design problems, and formatting issues. Supports customizable rule sets and integrates with build tools and IDEs.

Independently observed

mypy

Leader

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.

Independently observed

Pricing

List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.

Checkstyle

Free

as of 2026-08-14verify ↗

mypy

Leader

Open source

as of 2026-08-14verify ↗

Platform & deployment

Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.

Platform and deployment support comparison
Supports	Checkstyle	mypy
CLIPlatforms	✓	✓
Self-hostedDeployment	✓	-

Platforms

CLI

Checkstyle✓

mypy✓

Deployment

Self-hosted

Checkstyle✓

mypy–

Integrations

What each product connects to. Counts come from the vendor's own integration directory where one exists.

Checkstyle

2 total

Maven
Ant

Independently observed

mypy

Leader

Not documented yet.

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