awesome-linters

coala

Language agnostic linter based on rules and standards. Written in Python

commitlint

- commitlint checks if your commit messages meet the

Linters aggregator of 49 languages, 22 formats, 21 tooling formats , copy-pastes and spell. Can automatically apply fixes with commit or Pull Request

Scanmycode CE (Community Edition)

- Code Scanning/SAST/Static Analysis/Linting using many tools/Scanners with One Report

an all-in-one code tidier and validator with many available backends, caching, filtering-by-paths, and some other features

violations-lib

a library for parsing reports from static code analyzers. Can be used with Jenkins, Gradle, Maven and command line tools

ansible-lint

Checks playbooks for practices and behaviour that could potentially be improved

awesome-lint

Linter for Awesome lists. Helps to create and maintain Awesome lists. Written in JavaScript

Formats C/C++ code according to a coding style (Google, LLVM, Mozilla, Webkit, and Chromium available)

A clang-based C/C++ linter tool to provide an extensible framework for diagnosing and fixing typical programming errors

Cppcheck is a static analysis tool for C/C++ code. It provides unique code analysis to detect bugs and focuses on detecting undefined behaviour and dangerous coding constructs. The goal is to detect only real errors in the code (i.e. have very few false positives)

cpplint

Source code checker for C/C++ files following Google's internal C++ style guide

oclint

Static analysis for C, C++ and Objective-C. Written in C++

uncrustify

Source code beautifier for C, C++, C#, ObjectiveC, D, Java, Pawn and VALA

@coffelint/cli

Configurable linter written in CoffeScript to analyze CoffeScript

ameba

Static code analysis tool for Crystal

csslint

CSS static analysis written in JavaScript. Uses pluggable rules

csscomb

CSS tool that beautifies CSS based on a configuration. Helps with keeping CSS consistent. Written in JavaScript

ie8linter

Static analysis for Internet Explorer 8 compatibility. Written in JavaScript

postcss-bem-linter

Plugin for PostCSS to lint CSS according to . Written in JavaScript

CSS linter that is unopinionated, supports plugins and has a wide range of rules built-in. Written in JavaScript, it parses by default CSS-like syntaxes such as SCSS, Sass, Less and SugarSS

csvlint.rb

The gem behind

linter

Linter for Dart mostly focused on style lints. It's configurable but comes with configured rules out of the box. Written in Dart

dockerfile_lint

Rule based linter for Dockerfiles. The linter rules can be used to check file syntax as well as arbitrary semantic and best practice attributes determined by the rule file writer. The linter can also be used to check LABEL rules against docker images

Dockerfilelint

Dockerfilelint is a node module that analyzes a Dockerfile and looks for common traps, mistakes and helps enforce best practices

Dockerlint

Linting tool for Dockerfiles based on recommendations from Dockerfile Reference and Best practices for writing Dockerfiles as of Docker 1.6

hadolint

Linter for Dockerfiles. The linter is parsing the Dockerfile into an AST and performs rules on top of the AST. It is standing on the shoulders of ShellCheck to lint the Bash code inside RUN instructions

credo

Static code analysis tool for the Elixir language with a focus on code consistency and teaching

elm-review

Analyzes whole Elm projects, with a focus on shareable and custom rules written in Elm that add guarantees the Elm compiler doesn't give you

alex

Linter to help catch insensitive writing in English. Written in JavaScript

proselint

Linter for English that provides guidelines to make better writing. It has plugins for several editors and is configurable

The pluggable linting tool for natural language texts

dotenv-linter

- ⚡️Lightning-fast linter for files. Written in Rust 🦀

EPUBCheck

a tool to validate the conformance of EPUB publications against the EPUB specifications. Can be run as a standalone command-line tool or used as a Java library

elvis

Configurable Erlang linter written in Erlang

golangci-lint

Linters Runner for Go. 5x faster than gometalinter. Nice colored output. Can report only new issues. Fewer false-positives. Yaml/toml config

golint

Go style linter written in Go. Focus with coding styles more than with correctness

gometalinter

Concurrently run Go lint tools and normalise their output

Examines Go source code and reports suspicious constructs

graphql-schema-linter

- Validate GraphQL schema definitions against a set of rules

npm-groovy-lint

Validate, format and auto-fix Groovy, Jenkinsfile and Gradle files

hlint

Tool for suggesting possible improvements to Haskell code. These suggestions include ideas such as using alternative functions, simplifying code and spotting redundancies

haxe-checkstyle

Haxe Checkstyle is a static analysis tool to help developers write Haxe code that adheres to a coding standard

htmlhint

HTMLHint is a Static Code Analysis Tool for HTML, you can use it with IDE or in build system

Offline HTML5 validator. Validates either a full document or a smaller (incomplete) template

bootlint

Bootlint is a tool that checks for several common HTML mistakes in webpages that are using Bootstrap

jinjalint

A prototype linter which checks the indentation and the correctness of Jinja-like/HTML templates. Also supports Django Templates

LintHTML

LintHTML is a fork of htmllint. It is extendable via plugins

Nu Html Checker

An offline version of W3C's official validator for HTML, CSS, and SVG. Written in Java

checkstyle

Checkstyle is a development tool to help programmers write Java code that adheres to a coding standard

Uses static analysis to look for bugs in Java code

Static analyzer that finds common programming flaws. It supports Java, JavaScript, Salesforce.com Apex, PLSQL, Apache Velocity, XML, XSL

uncrustify

Source code beautifier for C, C++, C#, ObjectiveC, D, Java, Pawn and VALA

clinton

JavaScript project style linter

eslint

Fully pluggable tool for identifying and reporting on patterns in JavaScript

jshint

Community-driven tool that detects errors and potential problems in JavaScript code

prettier

Opinionated JavaScript formatter inspired by refmt with advanced support for language features from ES2017, JSX, and Flow

putout

Linter that fixes everything it can find, supports JS/TS/Flow and wrap ESLint (when exists)

Finds bugs in JavaScript programs. Designed for editors

standard

JavaScript style linter that allows no configuration

xo

Opinionated but configurable ESLint wrapper with lots of goodies included. Enforces strict and readable code

ktlint

An anti-bikeshedding Kotlin linter with built-in formatter

luacheck

A tool for linting and static analysis of Lua code

lualint

lualint performs luac-based static analysis of global variable usage in Lua source code

markdownlint

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

mdl

Check markdown files and flag style issues. Written in ruby and is distributed as a rubygem

remark-lint

Written in JavaScript. remark-lint provides configurable Markdown style linting

lockfile-lint

Lint an npm or yarn lockfile to analyze and detect security issues

npm-package-json-lint

- Configurable linter to enforce standards in npm package.json files

oclint

Static source code analysis tool to improve quality and reduce defects for C, C++ and Objective-C. Written in C++

uncrustify

Source code beautifier for C, C++, C#, ObjectiveC, D, Java, Pawn and VALA

speccy

A handy toolkit for OpenAPI, with a linter to enforce quality rules

The leading static analyzer for Perl. Configurable, extensible, powerful

a Perl code autoformatter/beautifier

Node wrapper around the native php linter that allows for parallel linting and integration with build systems like Grunt, Gulp and more

PHP Mess Detector

PHPMD can be seen as a user friendly and easy to configure frontend for the raw metrics measured by PHP Depend

polylint

Catch errors in your polymer project before even running your code. Written in TypeScript

pug-lint

— An unopinionated and configurable linter and style checker for Pug (formerly Jade)

puppet-lint

Test modules and manifests against the recommended Puppet style guidelines from the Puppet Labs style guide. Written in Ruby

black

The uncompromising Python code formatter. Blackened code looks the same regardless of the project you're reading

flake8

Runs PyFlakes, pycodestyle and other tools from only one CLI. Written in Python

pycodestyle (formerly called pep8)

- Tool to check your Python code against some of the style conventions in PEP 8

pylint

Source code analyzer which looks for programming errors, helps enforcing a coding standard and sniffs for some code smells

ruff

An extremely fast Python linter, written in Rust which is orders of magnitude faster than alternative tools while integrating more functionality behind a single, common interface

wemake-python-styleguide

- The strictest and most opinionated python linter ever

yala

YALA combines many linters to improve the quality of your code

regal

Regal is a linter for the policy language . Regal aims to catch bugs and mistakes in policy code, while at the same time helping people learn the language, best practices and idiomatic constructs

Doc8 is an opinionated style checker for rst (with basic support for plain text) styles of documentation. Notice, it does not support additional sphinx extensions. Project is also available on or

reStructuredText Lint

- Validate reST files either as a module or from a CLI utility. Written in Python

rubocop

Ruby static code analyzer. Out of the box it will enforce many of the guidelines outlined in the community Ruby Style Guide

rust-clippy

Collection of lints to catch common mistakes and improve your Rust code

salt-lint

A command-line utility that checks for best practices in SaltStack

sass-lint

Node-only Sass linter for both sass and scss syntax

scss-lint

Tool to help keep your SCSS files clean and readable by running it against a collection of configurable linter rules

CSS linter that is unopinionated, supports plugins and has a wide range of rules built-in. Written in JavaScript, it parses by default CSS-like syntaxes such as SCSS, Sass, Less and SugarSS

linter

Scala static analysis compiler plugin which adds compile-time checks for various possible bugs, inefficiencies, and style problems

Examines your Scala code and indicates potential problems with it. Similar to Checkstyle for Java

scapegoat

Another similar tool to Checkstyle for Java. Flags suspicious language usage in code

Flexible and configurable Scala linter written in Scala

shellcheck

Gives warnings and suggestions for bash/sh shell scripts

shfmt

a shell (POSIX shell / bash / mksh) parser, formatter, and interpreter written in Go 1.13-and-above

sqlfluff

SQLFluff is a dialect-flexible and configurable SQL linter

swiftlint

Tool to enforce Swift style and conventions, loosely based on GitHub's Swift Style Guide

tslint

Customizable TypeScript linter with automatic fixing of formating and style violations

spectral

A flexible JSON/YAML linter, with out of the box support for OpenAPI v2/v3 and AsyncAPI v2

yamllint

Linter for YAML files