Open-source alternatives to Errcheck

Vulture is a static analysis tool and linter designed to find unused variables, functions, and classes in Python source code. It operates as a dead code detector and unused code finder that scans source files to identify unreachable expressions and imports without executing the code. The tool employs a confidence-based heuristic scoring system to assign probability values to detections, helping to distinguish truly unused symbols from potential false positives. It further assists in pruning dead logic by sorting detected unused classes and functions by line count to prioritize the removal of

gofumpt is a Go language tool and source code formatter. It functions as an opinionated code styler that applies a strict and consistent visual style to Go source files to ensure a standardized appearance across a codebase. The tool enforces a more rigid and deterministic set of layout constraints than the standard Go toolchain. It is designed for Go project style enforcement to eliminate trivial diffs and stylistic inconsistencies. The project supports Go source code formatting and continuous integration linting to automatically check and correct formatting during the build process.

PlantUML Class Diagram Generator for golang projects

A Golang tool that does static analysis, unit testing, code review and generate code quality report.

A static analysis tool for securing Go code

Flake8 is a Python style checker and static analysis tool that identifies programmatic errors and violations of coding standards in source files. It serves as a linting wrapper that aggregates multiple checkers into a single interface, functioning as a pluggable framework for Python code analysis. The tool incorporates a cyclomatic complexity analyzer to measure the logical complexity of functions and identify code that requires refactoring. It is designed for extensibility, allowing the integration of custom plugins and rules through defined entry points. The system provides capabilities fo

Find in Go repeated strings that could be replaced by a constant

This project is a specialized instruction set for AI coding agents designed to perform structured, language-specific code reviews. It functions as an automated tool that evaluates source code against predefined checklists to identify security, performance, and architectural inconsistencies across diverse technology stacks. The system distinguishes itself by employing a multi-phase analysis pipeline that moves from high-level architectural assessments to granular, line-by-line inspections. It utilizes a severity-based taxonomy to categorize findings, clearly separating blocking security issues

GitHub action to run Go lint checks on PR event

Scan your Angular codebase for performance, architecture, and dead code issues — outputs a 0–100 health score with actionable diagnostics

This project is a comprehensive, curated directory of static analysis, linting, and security scanning utilities. It serves as a central resource for developers to discover, compare, and select tools based on specific programming languages, licensing models, and integration requirements. The directory distinguishes itself by providing deep metadata for each listed utility, including community-driven popularity rankings, maintenance status, and deployment methods. By aggregating these tools into a single searchable index, it enables teams to identify solutions for enforcing coding standards, ma

Shellharden is a shell script hardening tool and linter designed to improve the security and reliability of Bash scripts. It functions as an automated utility that rewrites scripts to follow industry standards for quoting and security practices. The project provides an optimizer and standardizer that replaces unsafe patterns and aliases with safer functional equivalents. It includes a syntax highlighter that uses visual markers and colorization to indicate vulnerabilities and areas where quoting corrections are required. The tool covers a broad range of capabilities including automated safet

A Github Action that runs pycodestyle and leaves a comment on your pull request with style errors.

A comprehensive TypeScript codebase analyzer that provides detailed metrics on type safety, code complexity, and quality. Get actionable insights to improve your TypeScript projects.

dogsled is a Go static analysis tool to find assignments/declarations with too many blank identifiers.

Bearer is a static analysis security testing tool and privacy compliance auditor. It identifies security vulnerabilities, hard-coded secrets, and privacy risks in source code through static analysis and data flow tracing. The tool distinguishes itself by tracking the movement of sensitive data through code to identify leaks and by mapping personal and health-related information flows to generate evidence for privacy impact assessments. It also provides differential scanning for pull requests and uses fingerprint-based suppression to exclude known false positives from reports. The platform co

Parse your Angular code base to JSON abstraction - Great for displaying APIs and running custom analysis

Linter for markdown (with presets)

a ruby code dependency graph interactive visualizer

Discover files in need of refactoring.

␊ whitespace linter - Forces you to use empty lines!

Static analyzer and linter for Clojure code that sparks joy

A code analyzer for Julia. No need for additional type annotations.