It costs $27.95 for one PC, with a 30-day money-back guarantee. Registry First Aid includes a variety of tools to scan, identify and clean the registry, while providing a backup of your changes.It sells for $29.99 for a one-year license after a 30-day free trial. It can clean, repair and optimize the Registry while automatically backing up changes and also includes privacy tools. PC Tools Registry Mechanic offers optimization tools for Windows 7, Vista and XP machines.Comodo System-Cleaner is a free Registry cleaner that also includes tools that will help you maintain your privacy on your PC by deleting information about where you have been online.CCleaner is a free tool that, along with cleaning the Registry, removes temporary and other unneeded files from Windows and a variety of third-party applications.There are quite a few usable Registry cleaners out there. Comodo System-Cleaner is a free Registry cleaner for home use that can also delete information about where you have been online.

Most Registry cleaners have a built-in back-up feature, but it never hurts to do a manual Registry backup just in case.Īnd of course, be wary of free Registry cleaners that haven't been recommended by trustworthy sources - unless you want to spend several hours cleaning up your PC. If you do use one, be sure that you manually back up the Registry before making any changes so you can revert to where you were before in case things get worse. However, there are also risks, including the possibility that you can accidentally remove key application files - which is why some experts don't like them. They can not only prevent problems, but increase disk space and help your system run more efficiently. That's where Registry cleaner software can be useful.

Pieces of code left over from improperly uninstalled applications can create hassles with other programs or with the operating system.

With all of the complex changes that occur in your PC's Windows Registry every time you install or uninstall a program, there's a potential minefield of hidden problems that can arise.

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