Marketplace

Code quality

Automate your code review with style, quality, security, and test‑coverage checks when you need them.

Code coverage done right.® Group, merge, archive and compare coverage reports

Automated code reviews to help developers ship better software, faster

Code review expert on demand. Automated for mobile and web

Automatically fix the code style of your PHP, Python, JavaScript, and CSS code

Write better code. With a Definition of Done

Automated code review for technical debt and test coverage

Ensure that new code is fully covered, and see coverage trends emerge. Works with any CI service

Find accessibility issues in your pull requests

Static code analysis to uncover anti-patterns, bad API use, and more

Looking for more tools that work with GitHub? Browse the Works With GitHub directory for services that integrate with the GitHub platform.

List your app on GitHub Marketplace

Get started with apps: Build the tools your workflow needs with GitHub GraphQL and REST APIs.

Submit your app for review: Select a registered OAuth or GitHub app to share with millions of developers.