PMD is an extensible multilanguage static code analyzer. It finds common programming flaws like unused variables, empty catch blocks
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Author: Eilidih Parris
YAPF – Python formatter based on clang-format
The ultimate goal is that the code YAPF produces is as good as the code that a programmer would write if they were following the style guide.
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blue – Python code formatter
blue is a somewhat less uncompromising code formatter than black, the OG of Python formatters.
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SpotBugs – find bugs in Java code
SpotBugs is a program which uses static analysis to look for bugs in Java code. It’s a fork of the abandoned FindBugs.
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6 Best Free and Open Source C and C++ Linter Tools
This article picks some useful tools to help you fix C and C++ code.
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6 Best Free and Open Source Haskell Linter Tools
A linter is a tool used to analyze source code for potential errors, stylistic issues, and adherence to coding standards.
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9 Useful Free and Open Source JavaScript Linter Tools
This article picks some useful tools to help you fix JavaScript code.
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6 Best Free and Open Source Java Static Site Generators
We have compiled a list of the best Java static site generators. These tools are released under a freely distributable license.
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11 Best Free and Open Source OpenAPI Linter Tools
This article picks some useful tools to help you validate OpenAPI in your project.
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5 Best Free and Open Source Markdown Linter Tools
This article picks some useful tools to help you fix Markdown code.
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Rate My OpenAPI – improve the quality of your OpenAPI specifications
Rate My OpenAPI is a suite of tools designed to help software developers who are using OpenAPI to design and implement their APIs.
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oval – CLI for (O)penAPI Specification document (val)idation
oval is an OpenAPI Specification (OAS) document validator that was built to replace the CLI provided by swagger-tools.
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OpenAPI Spec validator – validates OpenAPI Specs
OpenAPI Spec Validator is a CLI, pre-commit hook and python package that validates OpenAPI Specs against the OpenAPI 2.0 (aka Swagger), OpenAPI 3.0 and OpenAPI 3.1 specification.
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OAS-Kit – convert Swagger 2.0 definitions to OpenAPI 3.0
OAS-Kit converts Swagger 2.0 definitions to OpenAPI 3.0 and resolve/validate/lint.
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5 Best Free and Open Source Go Linter Tools
This article picks some useful tools to help you fix Go code.
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18 Best Free and Open Source Python Linter Tools
This article picks some useful tools to help you fix Python code.
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Roq – static site generator
Roq is billed as a powerful static site generator that combines the best features of tools like Jekyll and Hugo, but within the Java ecosystem.
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5 Best Free and Open Source HTML Linter Tools
This article picks some useful tools to help you fix HTML code.
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Floskell – flexible Haskell source code pretty printer
Floskell started as a fork of version 4 of Chris Done’s hindent. The formatting styles present in hindent 4 have been preserved in spirit
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v.Nu – catch mistakes in HTML, CSS and SVG
The Nu Html Checker (v.Nu) helps you catch unintended mistakes in your HTML, CSS, and SVG.
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