AppDelete is an uninstaller for Macs that will remove not only applications but also widgets, preference panes, plugins, and screensavers along with their associated files. Without AppDelete these associated items will be left behind to take up space and potentially cause issues.
There are several ways to activate AppDelete:
Drag items onto main window
Drag items onto dock
Select items through menu
Right-click to use more...
WHAT\'S NEW
Version 4.1.3:
Fixed a bug in the updater where it could ask for a password by mistake
Resolved issue where preference files might be cached after deleting in OS X 10.9 Mavericks
Improved search algorithm for finding more files than ever before
Miscellaneous bug fixes and improvements
REQUIREMENTS
Intel, 64-bit processor
OS X 10.7 or later
http://www.reggieashworth.com/appdelete