1. The fully pluggable JavaScript code quality tool

  2. StyleCI is a PHP coding style Continuous Integration service.

  3. GitHub code review platform.

  4. Linting and fixing code for all languages

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

  6. Share your code instantly for refactoring and code review

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

  8. GH

    Quickly browse the history of any GitHub file Replace github.com with github.githistory.xyz in any file url.

  9. Code review as a service

    paid Free Trial $99.0 / Monthly (for individual developers)

  10. GitHub Integrated Automated Code Review Service

  11. COS

    Automated code review for iOS

  12. 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.