A Note to Developers The Ultimate Notification System for OS X. Growl is the easiest way to know what's going on with your applications. Uninstalling Growl 1.3 and later Growl 1.3 is installed via the app store. As a result, it is pretty easy to remove Growl. Follow these steps: Make sure that Growl is not running. Look for the Growl claw up by the clock on the menu bar. Go into your Applications