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

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

SensioLabs Insight - PHP Project Quality Done Right.

CodeClimate - 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.

Kiuwan Application Security - Kiuwan Application Security is an end-to-end Appsec platform.

Source-Navigator NG - Source-Navigator NG is a source code analysis tool.