Best Code Coverage Products in 2025

The fully pluggable JavaScript code quality tool.

Key ESLint features:

Customization Extensibility Community Support Integrations

Open Source

SonarQube, a core component of the Sonar solution, is an open source, self-managed tool that systematically helps developers and organizations deliver Clean Code.

Key SonarQube features:

Comprehensive code analysis Multi-language support Continuous integration (CI) integration Customizable rules

Open Source freemium $150.0 / Annually

An opinionated code formatter.

Key Prettier features:

Consistency Time-saving Integrations Language Support

Open Source

Automatically reviews code style, security, duplication, complexity, and coverage on every change while tracking code quality throughout your sprints.

Key Codacy features:

Comprehensive Code Analysis Supports Multiple Languages Integration with CI/CD Pipelines Customizable Analysis

Code Climate provides automated code review for your apps, letting you fix quality and security issues before they hit production. We check every commit, branch and pull request for changes in quality and potential vulnerabilities.

Key CodeClimate features:

Automated Code Review Extensive Integrations Detailed Reporting Team Collaboration

Open Source

Find and fix defects in your Java, C/C++ or C# open source project for free.

Key Coverity Scan features:

Comprehensive Analysis Wide Language Support Integration with Development Workflow Actionable Reports

Automated Code Review for GitHub & BitBucket.

Key CodeFactor.io features:

Real-time Code Review Integration with Popular Platforms Detailed Reports Automated Code Review

Source Insight is a programming editor & code browser with built-in live analysis for C/C++, C#, Java, and more; helping you understand large projects.

Key Source Insight features:

Efficient Code Navigation Real-time Symbolic Analysis Customizable Syntax Formatting Lightweight and Fast

Automated code review for Swift.

Key codebeat features:

Automated Code Review Multi-Language Support Integration Code Quality Metrics

Coveralls is a code coverage history and tracking tool that tests coverage reports and statistics for engineering teams.

Key Coveralls features:

Code Coverage Visualization Integration with CI/CD Tools Multi-language Support Public and Private Repositories

Open Source

The industry’s most comprehensive AppSec platform, Checkmarx One is fast, accurate, and accelerates your business.

Key Checkmarx features:

Comprehensive Coverage Integration Capabilities Customization User-Friendly Interface

Pylint is a Python source code analyzer which looks for programming errors.

Key PyLint features:

Extensive Error Checking Customizability Integration with Development Tools Code Quality Metrics

Cppcheck is an analysis tool for C/C++ code. It detects the types of bugs that the compilers normally fail to detect. The goal is no false positives. CppCheckDownload cppcheck for free.

Key Cppcheck features:

Open Source Static Analysis Wide Platform Support Integrated with IDEs

Open Source