Registry Cleaner
Windows Registry Software Utilities
Registry Cleaners are software utilities that attempt to remove configuration data from the Windows Registry that is no longer in use or that is unwanted on the system. Such data may include information left by software that has not been uninstalled completely from the computer, information that is no longer of use, or settings required for the operation of malware. A registry cleaner scans the registry and attempts to pick out the unnecessary values in order to delete or repair them.Registry cleaners, or registry cleanup software, may 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.
(Source: Wikipedia)







