ErrorSmart claims to be a program designed to completely clean your PC’s registry with a few clicks of the mouse. Unlike registry cleaners, this apparently goes one step further and cleans your entire PC's hard-drive.  If you are having problems with your PC running slowly, ErrorSmart promises to help detect missing, obsolete, and corrupt entries that need to be repaired or removed from your registry or hard-drive.

[Editor Note: McAfee SiteAdvisor tested the manufacturer’s website on 05/03/12: “Security professionals warn against sites that make exaggerated or deceptive claims that can potentially mislead consumers”. “We found downloads on this site that some people consider adware, spyware or other potentially unwanted programs.”]