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Merely removing apps on Mac OS X is not a hard thing to do: drag & drop or just delete to the Trash. But sometimes after such removal on your Mac, there could be left system files, caches, logs, and other debris – called app leftovers. Sometimes its service files occupy tiny space calculated in KB, other times – comparable to the size of the application itself. It is better to use special third-party app uninstallers for removing programs with all their service files.