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Lint, analyze, normalize, transform, sandbox, run, step through, and visualize user JavaScript, in node or the browser.

A compiler tool to increase efficiency, reduce size, and provide code warnings in JavaScript files.

Ensures that all of your project's JavaScript code follows the guidelines in the Google JavaScript Style Guide. It can also automatically fix many common errors.

Software complexity analysis for JavaScript projects.

An analyzer for JavaScript which targets runtime errors and quality issues rather than coding conventions.

Visualize JavaScript (ES6) source complexity.

Software complexity analysis of JavaScript-family abstract syntax trees.

ECMAScript parsing infrastructure for multipurpose analysis.

A static type checker for JavaScript.

A static type checker for JavaScript with a bias on type inference and strong type systems.

Detect errors and potential problems in JavaScript code and enforce your team's coding conventions.

The JavaScript Code Quality Tool.

Static security analysis tool.

A static security code scanner for Node.js applications powered by libsast and semgrep that builds on the njsscan cli tool. It features a UI with various dashboards about an application's security status.

Visualize JavaScript source complexity.

A static analysis framework for Web Components.

Scanner detecting the use of JavaScript libraries with known vulnerabilities.

A (WIP) JavaScript linter written in Rust designed to be as fast as possible, customizable, and easy to use.

An npm module that checks for Javascript Styleguide issues.

A JavaScript code analyzer for deep, cross-editor language support.

With TypL, you just write completely standard JS, and the tool figures out your types via powerful inferencing.

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

Javascript code metrics.

A dynamic code analysis tool for JavaScript. Iroh allows to record your code flow in realtime, intercept runtime informations and manipulate program behaviour on the fly.

Creates reports of over 400 rule patterns for feature detection (e.g. the use of cryptography or version control in apps).

A linter and formatter to help you to improve copywriting, correct spaces, words, punctuations between CJK (Chinese, Japanese, Korean).

Open-Source static code analysis tool to discover, filter and prioritize security risks and vulnerabilities leading to sensitive data exposures (PII, PHI, PD). Highly configurable and easily extensible, built for security and engineering teams.

Checks your code and infra (various Git repositories supported, cloud stacks, CLI, Web Interface platform, integrationss available) for security and quality issues. Code Scanning/SAST/Linting using many tools/Scanners deduplicated with One Report (AI optional).

A toolchain for web projects, aimed to provide functionalities to maintain them. Biome formats and lints code in a fraction of a second. It is the successor to Rome. It is designed to eventually replace Biome is designed to eventually replace Babel, ESLint, webpack, Prettier, Jest, and others.

Statically generates a call graph image and displays it on screen.

Commercial Static Code Analysis which runs locally, but uploads the results to its cloud for presentation.

Commercial Static Code Analysis which doesn't require pre-compilation.

Language independent framework for creating code analysis - supports over 60 languages by default.

Ecosystem for structural matching JavaScript and TypeScript code. Offers search tool that understands code structure. Available as CLI tool and Visual Studio Code extension. It helps to search code faster and more accurately making you workflow more effective. Soon it will offer ESLint plugin to create your own rules in minutes to help with assuring codebase quality.

Synopsys Coverity supports 20 languages and over 70 frameworks including Ruby on rails, Scala, PHP, Python, JavaScript, TypeScript, Java, Fortran, C, C++, C#, VB.NET.

Check your code quality for js, jsx, vue, css, less, scss, sass and styl files.

Multi-language Static Application Security Testing (SAST) platform that detects critical vulnerabilities, including hardcoded secrets, weak cryptography, backdoors, SQL injections, insecure configurations, etc.

Emerge is a source code and dependency visualizer that can be used to gather insights about source code structure, metrics, dependencies and complexity of software projects. After scanning the source code of a project it provides you an interactive web interface to explore and analyze your project by using graph structures.

An extensible linter for JS, following the ECMAScript standard.

A JavaScript compiler and TypeScript checker written in Rust with a focus on static analysis and runtime performance. Ezno's type checker is built from scratch. The checker is fully compatible with TypeScript type annotations and can work without any type annotations at all.

Comments on style violations in GitHub pull requests. Supports Coffeescript, Go, HAML, JavaScript, Ruby, SCSS and Swift.

Lizard is an extensible Cyclomatic Complexity Analyzer for many programming languages including C/C++ (doesn't require all the header files or Java imports). It also does copy-paste detection (code clone detection/code duplicate detection) and many other forms of static code analysis. Counts lines of code without comments, CCN (cyclomatic complexity number), token count of functions, parameter count of functions.

Mega-Linter can handle any type of project thanks to its 70+ embedded Linters, its advanced reporting, runnable on any CI system or locally, with assisted installation and configuration, able to apply formatting and fixes

Mobb is a trusted, automatic vulnerability fixer that secures applications, reduces security backlogs, and frees developers to focus on innovation. Mobb is free for open-source projects.

OpenStaticAnalyzer is a source code analyzer tool, which can perform deep static analysis of the source code of complex systems.

The Oxidation Compiler is creating a suite of high-performance tools for the JavaScript / TypeScript language re-written in Rust.

A source code analyzer for Java, Salesforce Apex, Javascript, PLSQL, XML, XSL and others.

Quick automated code review of your changes. Supports more than 40 runners for various languages, including Clang, Elixir, JavaScript, PHP, Ruby and more.

An engine for searching patterns in the source code, based on Unified AST or UST. At present time C#, Java, PHP, PL/SQL, T-SQL, and JavaScript are supported. Patterns can be described within the code or using a DSL.

Pluggable and configurable code transformer with built-in eslint, babel plugins support for js, jsx typescript, flow, markdown, yaml and json.

Code audit tool for Python and JavaScript. Wraps pycodestyle, pydocstyle, PyFlakes, Mccabe, Pylint, and more

A static file linter that allows you to write custom rules using regular expressions (RegEx).

Extends Visual Studio with on-the-fly code inspections for C#, VB.NET, ASP.NET, JavaScript, TypeScript and other technologies.

Validate and auto-generate TypeScript types from raw SQL queries in PostgreSQL. SafeQL is an ESLint plugin for writing SQL queries in a type-safe way.

A fast, open-source, static analysis tool for finding bugs and enforcing code standards at editor, commit, and CI time. Its rules look like the code you already write; no abstract syntax trees or regex wrestling. Supports 17+ languages.

Sigrid helps you to improve your software by measuring your system's code quality, and then compares the results against a benchmark of thousands of industry systems to give you concrete advice on areas where you can improve.

SonarQube for IDE (formerly SonarLint) is a free IDE extension available for IntelliJ, VS Code, Visual Studio, and Eclipse, to find and fix coding issues in real-time, flagging issues as you code, just like a spell-checker. More than a linter, it also delivers rich contextual guidance to help developers understand why there is an issue, assess the risk, and educate them on how to fix it.

Static Reviewer executes code checks according to the most relevant Secure Coding Standards, OWASP, CWE, CVE, CVSS, MISRA, CERT, for 40+ programming languages, using 1000+ built-in validation rules for Security, Deadcode & Best Practices Available a module for Software Composition Analysis (SCA) to find vulnerabilities in open source and third party libraries.

Combination of multiple linters to install as a GitHub Action.

A commercial static analysis platform that allows for scanning of multiple languages (C/C++, Android, C#, Java, JS, PHP, Python, Node.JS, Ruby, Fortran, and Swift).

Tencent Cloud Code Analysis (TCA for short, code-named CodeDog inside the company early) is a comprehensive platform for code analysis and issue tracking. TCA consist of three components, server, web and client. It integrates of a number of self-developed tools, and also supports dynamic integration of code analysis tools in various programming languages.

Linter for integrating annotated TODOs with your issue trackers

A Simple and Comprehensive Vulnerability Scanner for Containers and other Artifacts, Suitable for CI. Trivy detects vulnerabilities of OS packages (Alpine, RHEL, CentOS, etc.) and application dependencies (Bundler, Composer, npm, yarn, etc.). Checks containers and filesystems.

Modern repositories include many technologies, each with its own set of linters. With 30+ linters and counting, Trunk makes it dead-simple to identify, install, configure, and run the right linters, static analyzers, and formatters for all your repos.

Code visualization tool that provides code analysis, standards testing, metrics, graphing, dependency analysis and more for Ada, VHDL, and others.

Find flaws in binaries and bytecode without requiring source. Support all major programming languages: Java, .NET, JavaScript, Swift, Objective-C, C, C++ and more.

Static analysis capabilities for Java bytecode and related languages and for JavaScript.

WhiteHat Scout (for Developers) combined with WhiteHat Sentinel Source (for Operations) supporting WhiteHat Top 40 and OWASP Top 10.

Pluggable TypeScript and JavaScript linter.