UninstallPKG allows you to completely remove the so-called “package” (file extension, pkg) and all content installed from your Mac, it can remove unnecessary functions, such as unused printer drivers, or completely remove you Applications that are no longer used to reclaim valuable disk space. The uninstaller can also keep the Mac clean by deleting leftover files from applications that have been partially deleted. It can delete all 37,290 files of Office 2011 at once, or completely delete things like Java or Flash plugins. It can also delete the application from the Dock and LoginItems directories after uninstalling the application, and delete the generated files (preferences, etc.).
Mac cracked apps screenshot: