A linter is a tool used in software development to analyze code for potential errors, stylistic issues, and adherence to coding standards
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Author: Eilidih Parris
8 Best Free and Open Source General Purpose Linter Tools
A linter is a tool used in software development to analyze code for potential errors, stylistic issues, and adherence to coding standards.
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semgrep – static analysis for many languages
Semgrep is a fast, open-source, static analysis tool that searches code, finds bugs, and enforces secure guardrails and coding standards
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Violations Lib – parse report files from static code analysis
Violations Lib is a Java library for parsing report files like static code analysis.
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PyMarkdown – Markdown linter
Its parser aims to be highly compliant to both the GitHub Flavored Markdown specification and the CommonMark specification.
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ty – fast Python type checker
ty is a fast Python type checker and language server. ty will run on all Python files in the working directory and or subdirectories.
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Fourmolu – formatter for Haskell source code
Fourmolu is a formatter for Haskell source code. It is a fork of Ormolu, with upstream improvements continually merged.
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clang-tidy – clang-based linter tool
clang-tidy is a clang-based C++ “linter” tool. It provides an extensible framework for diagnosing and fixing typical programming errors.
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HTMLHint – static code analysis tool
HTMLHint is a static code analysis tool. It’s written in JavaScript and TypeScript.
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jinjalint – prototype linter
jinjalint is a prototype linter which checks the indentation and the correctness of Jinja-like/HTML templates.
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Perltidy – indents and reformats Perl scripts
Perltidy is a Perl script which indents and reformats Perl scripts to make them easier to read.
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commitlint – lint commit messages
commitlint checks if your commit messages meet the conventional commit format.
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markdownlint – static analysis tool for Node.js
markdownlint is a Node.js style checker and lint tool for Markdown/CommonMark files.
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markdownlint – tool to check markdown files and flag style issues
markdownlint is an open source tool to check markdown files and flag style issues. It’s written in the Ruby language.
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hindent – extensible Haskell pretty printer
hindent is an extensible Haskell pretty printer. It’s both a library and an executable.
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HLint – suggests improvements to Haskell code
HLint is a tool for suggesting possible improvements to Haskell code.
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Ormolu – formatter for Haskell source code
Ormolu is a formatter for Haskell source code designed to be well-tested and robust so that the formatter can be used in large projects.
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stylish-haskell – simple Haskell code prettifier
stylish-haskell is a simple Haskell code prettifier. This tool tries to help where necessary without getting in the way.
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Cecil – simple and powerful content-driven static site generator
Cecil is a CLI application that merges plain text files (written in Markdown), images and Twig templates to generate a static website.
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ClangFormat – code formatting tool
ClangFormat is a code formatting tool that helps maintain common code style across team members and IDEs.
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