AppCleaner is a simple yet powerful application uninstaller for Mac OS X. It allows you to uninstall apps, widgets and other items such as browser plugins.
To remove an app, select it, and then click on “Search”. AppCleaner will then find all files associated with selected app, and show you the list. Once you’ve reviewed the list of files and folders to be removed, simply click on “Delete” and the app will be gone from your system.
AppCleaner is free – get it from official website.