FixRegistryError 

FixRegistryError undertakes complete cleaning of Windows Registry and hard drive, fixes inconsistencies in Registry and files. Optimizes your system, increase OS stability and speeds up your softwares by maintaining Registry Integrity
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A1Click Ultra PC Cleaner 

Use Clean PC, Remove Tracks, or Do-it-yourself Setup to find internal clutter, hidden stores, junk files, and registry trash - 7 Bonus Cleaning Tools - uses A1Click Technology and No Remains Deletion - can run automatically at startup, keeps undo.
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RegVac Registry Cleaner 

RegVac - Ten Tools to Clean your Registry Speed up your computer. Avoid computer crashes. Get your registry sparkling clean. And repair Windows and applications. Stronger cleaning power than other registry cleaners. Free updates.
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