Registry Cleaner is a tool to scan the Windows registry for invalid entries and to optionally remove or edit them. Upon start, it scans the registry for invalid entries and displays a list of them in a tree view. Furthermore, you can specify a backup folder location and protect selected keys.
Note: Requires free registration....
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Support for Registry Cleaner 2.0.1.6 is available from the
publisher/developer site 
This download (Registry Cleaner 2.0.1.6) is freeware. "Freeware is copyrighted computer software which is made available for use free of charge, for an unlimited time, as opposed to shareware where the user is required to pay (e.g. after some trial period or for additional functionality)." More info at
Wikipedia.
Soft32 (ITNT) cannot be held liable for issues that arise from the download or use of these software products. We encourage you to determine whether this software or your intended use is legal. Even if we try to check the program files for viruses, we cannot guarantee 100% that they are clean. For your own protection always check downloaded files for viruses, spyware and malware.