Coala is described as 'provides a unified command-line interface for linting and fixing all your code, regardless of the programming languages you use. https://coala.io/' and is an app in the Development category. There are four alternatives to Coala for a variety of platforms, including Mac, Windows, Linux, Online / Web-based and BSD. The best alternative is PyCharm, which is both free and Open Source. Other great apps like Coala are JSLint (Free, Open Source), PyLint (Free, Open Source) and JSHint (Free, Open Source).
Python and Django IDE with refactorings, code completion, on-the-fly code analysis and other features, including version control integration, deployment, integration with issue trackers, and remote debugging.