WinASO Registry Optimizer is a registry tool that has been through more than 5 years constant improvement. Its advanced scanning algorithm can scan the entire registry within a few seconds for obsolete and invalid entries, as well as other registry errors, all listed comprehensively in the scanning report. You can select the items to fix or let WinASO Registry Optimizer automatically fix them all for you. It has won 5-star Editor's rating on Download.com in 5 consecutive years. In addition to the registry optimizing function, WinASO Registry Optimizer also has a number of built-in tools such as "Privacy Cleaner", "System Optimizer", "Registry Defrag", "Start-up Manager", "IE Manager", "Uninstall Manager", and more, so that you do NOT need to pay extra money to buy such software.