Code Quality & Static Analysis Repositories

js-beautify

by beautifier

Total Stargazers:8996

Total Subscribers:202

Beautifier for javascript

gosec

by securego

Total Stargazers:8945

Total Subscribers:86

Go security checker

SwiftFormat

by nicklockwood

Total Stargazers:8930

Total Subscribers:76

A command-line tool and Xcode Extension for formatting Swift code

scc

by boyter

Total Stargazers:8740

Total Subscribers:36

Sloc, Cloc and Code: scc is a very fast accurate code counter with complexity calculations and COCOMO estimates written in pure Go

plannotator

by backnotprop

Total Stargazers:8642

Total Subscribers:21

Annotate and review coding agent plans and code diffs visually, share with your team, send feedback to agents with one click.

bandit

by PyCQA

Total Stargazers:8259

Total Subscribers:70

Bandit is a tool designed to find common security issues in Python code.

purgecss

by FullHuman

Total Stargazers:8048

Total Subscribers:55

Remove unused CSS

tools

by golang

Total Stargazers:8000

Total Subscribers:275

[mirror] Go Tools

xo

by xojs

Total Stargazers:7990

Total Subscribers:54

❤️ JavaScript/TypeScript linter (ESLint wrapper) with great defaults

scientist

by github

Total Stargazers:7756

Total Subscribers:438

:microscope: A Ruby library for carefully refactoring critical paths.

closure-compiler

by google

Total Stargazers:7680

Total Subscribers:226

A JavaScript checker and optimizer.

diff

by sebastianbergmann

Total Stargazers:7651

Total Subscribers:25

Diff implementation

axe-core

by dequelabs

Total Stargazers:7502

Total Subscribers:173

Accessibility engine for automated Web UI testing

bullet

by flyerhzm

Total Stargazers:7339

Total Subscribers:67

help to kill N+1 queries and unused eager loading

fuck-u-code

by Done-0

Total Stargazers:7283

Total Subscribers:21

Legacy-Mess Detector – assess the “legacy-mess level” of your code and output a beautiful report

ctags

by universal-ctags

Total Stargazers:7281

Total Subscribers:104

A maintained ctags implementation

error-prone

by google

Total Stargazers:7237

Total Subscribers:150

Catch common Java mistakes as compile-time errors

dependency-cruiser

by sverweij

Total Stargazers:7164

Total Subscribers:22

Validate and visualize dependencies. Your rules. JavaScript, TypeScript, CoffeeScript. ES6, CommonJS, AMD.

prettier-plugin-tailwindcss

by tailwindlabs

Total Stargazers:7131

Total Subscribers:15

A Prettier plugin for Tailwind CSS that automatically sorts classes based on our recommended class order.

detekt

by detekt

Total Stargazers:7050

Total Subscribers:57

Static code analysis for Kotlin

rustfmt

by rust-lang

Total Stargazers:6961

Total Subscribers:51

Format Rust code

pyrefly

by facebook

Total Stargazers:6958

Total Subscribers:22

A fast type checker and language server for Python

isort

by PyCQA

Total Stargazers:6951

Total Subscribers:42

A Python utility / library to sort imports.

size-limit

by ai

Total Stargazers:6944

Total Subscribers:37

Calculate the real cost to run your JS app or lib to keep good performance. Show error in pull request if the cost exceeds the limit.

go-tools

by dominikh

Total Stargazers:6891

Total Subscribers:72

Staticcheck - The advanced Go linter

cppcheck

by cppcheck-opensource

Total Stargazers:6744

Total Subscribers:204

static analysis of C/C++ code

ktlint

by ktlint

Total Stargazers:6743

Total Subscribers:50

An anti-bikeshedding Kotlin linter with built-in formatter

pre-commit-hooks

by pre-commit

Total Stargazers:6678

Total Subscribers:46

Some out-of-the-box hooks for pre-commit

miri

by rust-lang

Total Stargazers:6580

Total Subscribers:60

An interpreter for Rust's mid-level intermediate representation

go-callvis

by ondrajz

Total Stargazers:6507

Total Subscribers:73

Visualize call graph of a Go program using Graphviz

rails-style-guide

by rubocop

Total Stargazers:6504

Total Subscribers:203

A community-driven Ruby on Rails style guide

larastan

by larastan

Total Stargazers:6501

Total Subscribers:49

⚗️ Adds code analysis to Laravel improving developer productivity and code quality.

rushstack

by microsoft

Total Stargazers:6495

Total Subscribers:50

Monorepo for tools developed by the Rush Stack community

Bear

by rizsotto

Total Stargazers:6478

Total Subscribers:56

Generate compile_commands.json for any C or C++ build

repowise

by repowise-dev

Total Stargazers:6414

Total Subscribers:28

Codebase intelligence for AI and humans: code health scores, auto-generated docs, git analytics, dead code detection, and architectural decisions via MCP.

markdownlint

by DavidAnson

Total Stargazers:6340

Total Subscribers:74

A Node.js style checker and lint tool for Markdown/CommonMark files.

eslint-config

by antfu

Total Stargazers:6258

Total Subscribers:16

Anthony's ESLint config preset

state-of-the-art-shitcode

by trekhleb

Total Stargazers:6200

Total Subscribers:51

💩State-of-the-art shitcode principles your project should follow to call it a proper shitcode

jscpd

by kucherenko

Total Stargazers:6198

Total Subscribers:28

Copy/paste detector for source code. 220+ languages, Rust engine, SARIF/HTML/badge reporters, GitHub Action, MCP server for AI agents.

google-java-format

by google

Total Stargazers:6190

Total Subscribers:131

Reformats Java source code to comply with Google Java Style.

ts-morph

by dsherret

Total Stargazers:6179

Total Subscribers:19

TypeScript Compiler API wrapper for static analysis and programmatic code changes.

jedi

by davidhalter

Total Stargazers:6179

Total Subscribers:106

Awesome autocompletion, static analysis and refactoring library for python

javaparser

by javaparser

Total Stargazers:6151

Total Subscribers:136

Java 1-25 Parser and Abstract Syntax Tree for Java with advanced analysis functionalities.

vale

by vale-cli

Total Stargazers:6100

Total Subscribers:31

:pencil: A markup-aware linter for prose built with speed and extensibility in mind.

eslint-plugin-import

by import-js

Total Stargazers:5943

Total Subscribers:37

ESLint plugin with rules that help validate proper imports.

eslint-config-prettier

by prettier

Total Stargazers:5892

Total Subscribers:27

Turns off all rules that are unnecessary or might conflict with Prettier.

psalm

by vimeo

Total Stargazers:5891

Total Subscribers:54

A PHP static analysis tool for finding errors and security vulnerabilities in PHP applications

tflint

by terraform-linters

Total Stargazers:5811

Total Subscribers:37

A Pluggable Terraform Linter

nyc

by istanbuljs

Total Stargazers:5761

Total Subscribers:51

the Istanbul command line interface

pylint

by pylint-dev

Total Stargazers:5722

Total Subscribers:73

It's not just a linter that annoys you!

danger

by danger

Total Stargazers:5690

Total Subscribers:45

🚫 Stop saying "you forgot to …" in code review (in Ruby)

spotless

by diffplug

Total Stargazers:5644

Total Subscribers:30

Keep your code spotless

phpinsights

by nunomaduro

Total Stargazers:5633

Total Subscribers:61

🔰 Instant PHP quality checks from your console

phan

by phan

Total Stargazers:5624

Total Subscribers:96

Phan is a static analyzer for PHP. Phan prefers to avoid false-positives and attempts to prove incorrectness rather than correctness.

revive

by mgechev

Total Stargazers:5550

Total Subscribers:33

🔥 ~6x faster, stricter, configurable, extensible, and beautiful drop-in replacement for golint

prettier-vscode

by prettier

Total Stargazers:5514

Total Subscribers:41

Visual Studio Code extension for Prettier

danger-js

by danger

Total Stargazers:5510

Total Subscribers:24

⚠️ Stop saying "you forgot to …" in code review

pmd

by pmd

Total Stargazers:5488

Total Subscribers:135

An extensible multilanguage static code analyzer.

python-mode

by python-mode

Total Stargazers:5466

Total Subscribers:270

Code Quality & Static Analysis

Linters, formatters, static analysis, code review and refactoring tools.

js-beautify

by beautifier

Beautifier for javascript

gosec

by securego

Go security checker

SwiftFormat

by nicklockwood

A command-line tool and Xcode Extension for formatting Swift code

scc

by boyter

Sloc, Cloc and Code: scc is a very fast accurate code counter with complexity calculations and COCOMO estimates written in pure Go

plannotator

by backnotprop

Annotate and review coding agent plans and code diffs visually, share with your team, send feedback to agents with one click.

bandit

by PyCQA

Bandit is a tool designed to find common security issues in Python code.

purgecss

by FullHuman

Remove unused CSS

tools

by golang

[mirror] Go Tools

xo

by xojs

❤️ JavaScript/TypeScript linter (ESLint wrapper) with great defaults

scientist

by github

:microscope: A Ruby library for carefully refactoring critical paths.

closure-compiler

by google

A JavaScript checker and optimizer.

diff

by sebastianbergmann

Diff implementation

axe-core

by dequelabs

Accessibility engine for automated Web UI testing

bullet

by flyerhzm

help to kill N+1 queries and unused eager loading

fuck-u-code

by Done-0

Legacy-Mess Detector – assess the “legacy-mess level” of your code and output a beautiful report

ctags

by universal-ctags

A maintained ctags implementation

error-prone

by google

Catch common Java mistakes as compile-time errors

dependency-cruiser

by sverweij

Validate and visualize dependencies. Your rules. JavaScript, TypeScript, CoffeeScript. ES6, CommonJS, AMD.

prettier-plugin-tailwindcss

by tailwindlabs

A Prettier plugin for Tailwind CSS that automatically sorts classes based on our recommended class order.

detekt

by detekt

Static code analysis for Kotlin

rustfmt

by rust-lang

Format Rust code

pyrefly

by facebook

A fast type checker and language server for Python

isort

by PyCQA

A Python utility / library to sort imports.

size-limit

by ai

Calculate the real cost to run your JS app or lib to keep good performance. Show error in pull request if the cost exceeds the limit.

go-tools

by dominikh

Staticcheck - The advanced Go linter

cppcheck

by cppcheck-opensource

static analysis of C/C++ code