Waydev - Waydev analyzes your codebase from Github, Gitlab, Azure DevOps & Bitbucket to help you bring out the best in your engineers work.
codebeat - Automated code review for Swift
Git History - Quickly browse the history of any GitHub file Replace github.com with github.githistory.xyz in any file url.
CodeStream - CodeStream helps development teams resolve issues faster, and improve code quality by streamlining code reviews inside your IDE
Git analytics - for software developers, teams, and open-source communities
Codacy - Automatically reviews code style, security, duplication, complexity, and coverage on every change while tracking code quality throughout your sprints.