Good way to delete all the accompanying files created by an application you want to delete. Crowded field of utilities. CleanApp was our favorite, though new version has been buggy. AppZapper has a nice interface and best sound effects. AppDelete, like AppCleaner, is free.

AppCleaner is a small application which allows you to completely and properly uninstall unwanted apps. It isn’t, in fact, sufficient to just delete an application. Installing an application distributes many files throughout your System using space of your Hard Drive unnecessarily. AppCleaner can find all these small files and safely delete them.

9WR - AppCleaner: Utility deletes application and other associated files and preferences.