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

A language-agnostic linter that keeps code, documentation, and configuration in sync and enforces strict formatting and validation rules.

Copy/paste detector for programming source code. Finds duplicated blocks in 200+ file formats — JavaScript, TypeScript, Python, Java, C#, C/C++, Go, Rust, PHP, Ruby and more — using token-based detection. Supports configurable thresholds and ignore patterns, git blame integration, and reporters for console, HTML, JSON, Markdown, SARIF and badges. Runs via CLI, in CI pipelines, or as a library; bundled by MegaLinter and Codacy.

Code health metrics from the terminal. Grades a project from A++ to F-- on cognitive complexity, duplication, indentation, Halstead effort and file size, and lists the files to look at first. Separate commands report cyclomatic and cognitive complexity per function, duplicates, code smells and the Maintainability Index. From git history it finds hotspots, code ownership and temporal coupling, and measures which files a diff reaches. A CI gate fails when a changed file gets worse.

Semantic version control CLI that provides entity-level diffs, blame, and impact analysis on top of git. Uses tree-sitter to parse 26 languages and builds a cross-file dependency graph with structural hashing. Commands include sem diff, sem blame, sem graph, and sem impact for blast-radius analysis of code changes.

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.

Entity-level semantic merge driver for git. Resolves false conflicts that line-based merge produces when independent changes touch the same file. Parses functions and classes via tree-sitter, matches by name, and merges at the entity level. Benchmarked at 100% clean merges vs git's 48% on a 31-scenario suite.

ast-grep is a powerful tool designed for managing code at scale using Abstract Syntax Trees (AST). Think of it as a hybrid of grep, eslint, and codemod, with the ability to search, lint, and rewrite code based on its structure rather than plain text. It supports multiple languages and is designed to be extensible, allowing you to register custom languages.

Better Code Hub checks your GitHub codebase against 10 engineering guidelines devised by the authority in software quality, Software Improvement Group.

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

Code Analysis to ship Better Code, Faster.

Automated Code Analysis for repos on GitHub or BitBucket.

Free, anonymous SCA + SAST scanner. SCA: scans npm, PyPI, Maven, Go, Cargo, Ruby, NuGet dependencies for CVEs (OSV/KEV/EPSS), typosquats and supply-chain risk. SAST: pattern + taint analysis for 15 languages, 300+ rules. No account, no source upload. Available as a web tool, zero-install CLI and GitHub Action.

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.

Offensive360 is an application security platform combining SAST (taint/data-flow analysis across 60+ languages), DAST, SCA, mobile app scanning (Android/iOS), malware/binary analysis and license compliance. Findings include the full source-to-sink trace and a secure code example. Deploys as SaaS or as a self-hosted virtual appliance for offline/air-gapped networks. SARIF output; CI/CD (GitHub Actions, GitLab, Jenkins, Azure DevOps) and IDE integrations.

Deterministic, zero-LLM code-health analysis. Scores every file 1-10 for defect risk, maintainability, and performance from 25 markers: McCabe complexity, LCOM4 cohesion, god classes, Rabin-Karp clone detection, change entropy, and untested hotspots. Adds a dependency graph, dead-code detection, git-history signals (churn, ownership, co-change), and concrete graph-aware refactoring plans. Ships as a CLI, an MCP server, and a VS Code extension across 15 languages.

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.

Linter for integrating annotated TODOs with your issue trackers

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).

CodeScene is a quality visualization tool for software. Prioritize technical debt, detect delivery risks, and measure organizational aspects. Fully automated.

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

A graph-native code repository for people and AI agents. Kin parses supported languages into code entities and their relationships (calls, references, imports, inheritance) and versions them with the source. The kin CLI and an MCP server query the same graph for callers, references, traces and what a change might affect. Imports existing Git history. Public beta.

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.

SonarQube Cloud enables your team to deliver clean code consistently and efficiently with a code review tool that easily integrates into the cloud DevOps platforms and extend your CI/CD workflow. SonarQube Cloud provides a free plan.

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.

SonarQube empowers development teams with a code quality and security solution that deeply integrates into your enterprise environment; enabling you to deploy clean code consistently and reliably. SonarQube provides a free and open source Community Build.

Reports known vulnerabilities in common dependencies and recommends updated packages to minimize breaking changes

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

Builds knowledge graphs from multi-language codebases using Tree-sitter AST parsing and stores them in Memgraph. Supports 11 programming languages with a unified graph schema and enables natural language querying and editing of code structure and relationships. Functions as an MCP server for AI assistant integration.

Automated Code Reviews and Technical Debt management platform that supports 12+ languages.

Corgea is an AI-powered SAST scanner that helps developers find and fix insecure code. It finds business logic flaws, broken authentication, API vulnerabilities, and more with little false positives. Additionally, it automatically writes security fixes for them to approve. Corgea integrates with GitHub, GitLab, Azure DevOps, IDEs and CLI. It is free to try it.

Joern is a platform for analyzing source code, bytecode, and binary executables. It generates code property graphs (CPGs), a graph representation of code for cross-language code analysis. Code property graphs are stored in a custom graph database. This allows code to be mined using search queries formulated in a Scala-based domain-specific query language. Joern is developed with the goal of providing a useful tool for vulnerability discovery and research in static program analysis.

Scan is a free open-source DevSecOps platform for detecting security issues in source code and dependencies. It supports a broad range of languages and CI/CD pipelines. Note: ShiftLeft rebranded to Qwiet AI in 2023, which was subsequently acquired by Harness in September 2025. This open-source project is no longer maintained.

Snyk Code finds security vulnerabilities based on AI. Its speed of analysis allow us to analyse your code in real time and deliver results when you hit the save button in your IDE. Supported languages are Java, JavaScript, Python, PHP, C#, Go and TypeScript. Integrations with GitHub, BitBucket and Gitlab. It is free to try and part of the Snyk platform also covering SCA, containers and IaC.

Combination of multiple linters to install as a GitHub Action.

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.

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.

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

Multi-language maintainability analyzer. Computes cyclomatic and cognitive complexity, Halstead volume, afferent/efferent coupling and maintainability index, detects communities in the dependency graph, and generates an explorable HTML report plus JSON, Markdown, SARIF and OpenMetrics output. Single fast binary with no runtime dependency, and a built-in MCP server so AI agents can query codebase structure before refactoring.

Beautify HTML, CSS, JavaScript, PHP, Python, Ruby, Java, C, C++, C#, Objective-C, CoffeeScript, TypeScript, Coldfusion, SQL, and more in Atom editor.

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.

Automated code review tool integrates with GitHub, Bitbucket and GitLab (even self-hosted). Available for JavaScript, TypeScript, Python, Ruby, Go, PHP, Java, Docker, and more. (open-source free)

Mapped application services, directories, file dependencies, and code changes. Acquired by GitKraken in May 2024; the standalone product website is no longer available.

Codety Scanner is a comprehensive source code scanner that embeds 5000+ static code analysis rules, which aim to detect code issues for 20+ programming languages and IaC tools.

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.

Intelligent software analytics platform that identifies design issues, code issues, duplication and metrics. Supports Java, C, C++, C#, JavaScript, TypeScript, Python, Go, Kotlin and more.

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.

Enforster AI performs Contextual Code Security SAST, leveraging LLMs and artificial intelligence to reduce and enrich the detection of Logic Flaws, Secrets, Data leaks, Supply chain and technical vulnerabilities.

A commercial static analysis platform that supports the scanning of C/C++, C#, VB.NET, VB6, ABAP/BSP, ActionScript, Apex, ASP.NET, Classic ASP, VB Script, Cobol, ColdFusion, HTML, Java, JS, JSP, MXML/Flex, Objective-C, PHP, PL/SQL, T-SQL, Python (2.6, 2.7), Ruby (1.9.3), Swift, Scala, VB, and XML.

Keploy is an open-source testing platform that helps developers automate and streamline their testing process. It provides API, and integration testing agents, generating tests, mocks/stubs for APIs that actually work. Additionally, Keploy offers an AI-powered Unit Testing Agent that generates stable, useful unit tests directly in your GitHub PRs and in VSCode, helping catch errors and improve code quality.

Automated translation platform for code comments and docstrings across 20+ file types. Eliminates language barriers in international software collaboration. Supports 100+ language pairs with syntax protection. Integrates into CI/CD pipelines like Ruff. 10-20x faster with concurrent processing.

Find security vulnerabilities, variants, and critical code quality issues using CodeQL queries over source code. Automatic PR code review; free for open source. Formerly semmle. It supports public Git repositories hosted on Bitbucket Cloud, GitHub.com, GitLab.com.

Identify vulnerabilities that are unique to your code base before they reach production. Leverages the Code Property Graph (CPG) to run its analyses concurrently in a single graph of graphs. Automatically finds business logic flaws in dev like hardcoded secrets and logic bombs

A proprietary code quality checker that can be integrated with GitHub.

Quickly find and remediate high-priority security issues. Semgrep Supply Chain prioritizes the 2% of vulnerabilities that are reachable from your code.

Multi-language linter targeting anti-patterns that appear disproportionately in AI-generated code: duplicated blocks across files, excessive nesting, magic numbers, Single Responsibility violations, and linter suppressions added without justification. Covers Python, TypeScript, JavaScript and Rust from one configuration, ships a pre-commit hook per rule, and emits text, JSON or SARIF for CI.

Vulnerability Scanner and Risk Evaluation for containers, serverless and hosts at runtime. ThreatMapper generates runtime BOMs from dependencies and operating system packages, matches against multiple threat feeds, scans for unprotected secrets, and scores issues based on severity and risk-of-exploit.

Universal code beautifier with a GitHub app. Supports HTML, CSS, JavaScript, TypeScript, JSX, Vue, C++, Go, Objective-C, Java, Python, PHP, GraphQL, Markdown, and more.