Best Uninstaller for macOS (that I have tried)

The winner is AppCleaner. A small application which allows you to thoroughly uninstall unwanted apps.

Installing an application distributes many files throughout your System using space of your Hard Drive unnecessarily.
AppCleaner finds all these small files and safely deletes them.

Simply drop an application onto the AppCleaner window. It will find  for the related files and you can delete them by clicking the delete  button.