These tools cleanly uninstall programs that are no longer needed and declare war on fat chaos programs that are scattered all over the hard drive.
If you want to delete programs completely and without traces, use the free IObit Uninstaller.
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When they are installed, programs – whether Office tools or games – like to write themselves in many different folders, create a link here and store a few memory states there. The overview is quickly lost and forgotten folders remain on the hard drive when deleted. Not only do they steal valuable storage space there, the mess of data also makes searching for individual files unnecessarily difficult. Uninstallers are programs (which are often even free) that have declared war on such chaos programs.
When it comes to cleaning, they proceed differently: Some analyze the entire database and track down as many program parts as possible – regardless of where they are. The others take snapshots of the system before a program is installed. If the user deletes a program, the uninstallers compare before and after and filter out all program components. Many developers also advertise that their uninstaller is not only more thorough than the Windows uninstaller, but also faster. The Revo Uninstaller, for example, should also perform uninstallations in which Windows aborts with an error message. The developer calls this “Forced Uninstall”.