For code analysis, for static analysis, PMD supports Java, JavaScript, Salesforce.com Apex and Visualforce, Modelica, PLSQL, Apache Velocity, HTML, XML and XSL. However, it doesn't support Python, C#, C/C++. I revised the list accordingly. 

I also added several additional testing frameworks and tools that might be helpful.

The text has been revised in accordance with the comments provided on the pull request.