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.
Checkmarx - The industry’s most comprehensive AppSec platform, Checkmarx One is fast, accurate, and accelerates your business.
Coverity Scan - Find and fix defects in your Java, C/C++ or C# open source project for free
PyCharm - Python & Django IDE with intelligent code completion, on-the-fly error checking, quick-fixes, and much more...
Codacy - Automatically reviews code style, security, duplication, complexity, and coverage on every change while tracking code quality throughout your sprints.
ReSharper C++ - ReSharper provides on-the-fly code analysis and eliminates errors in C#, VB.NET, XAML, ASP.NET, and XML