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Windows registry cleaner and repiar tools
A registry cleaner is a type of software application designed specifically for the Microsoft Windows operating system. Its purpose is to remove redundant or unwanted items from the Windows registry.
Registry Cleaners remove items from the Windows Registry which are no longer in use or are unwanted on the system. Such items may include information left by software that has otherwise been removed from the computer, information that is no longer of use, or keys necessary to the operation of malware
Registry cleaners, or registry cleanup software, can in some cases improve the performance of computers by ridding the registry of redundant information.
Due to the sheer size and complexity of the registry database, manually cleaning up debris and invalid entries would be impractical, so registry cleaners are essentially tools that automate the process of looking for invalid entries, missing file references or broken links within the registry and resolving them.
Some registry cleaners offer backup and restore functions that allow the user to revert changes made by the registry cleaner in case they are undesired. A Registry Cleaner may be useful for someone that adds or removes programs from their computer very often, however most organisations would rebuild a problem machine back to a known, good state rather than waste resources trying to repair a machine that is not working. Furthermore, professionals typically use virtual machines for scenarios such as testing or application packaging where programs need to be installed and uninstalled frequently
more info
http://www.security-solution.50webs.com/download-registry-cleaners/index.html