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

The Most Dangerous Writing App - If you stop typing, all progress is lost.

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.

Copy History Support - Copy History Support is an app by JetToast Apps that allow users to access copied data on the clipboard to share it with other users, and they can view the complete history of data on the clipboard.

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.

Fluid Notes - Fluid Notes app comes up with features to help you keep track of all your notes, reminders, alarms, memos, etc.