1)   Registry Defragmentation 8.9.7.16
Registry Defragmentation is a small utility that does gigantic improvements in computer performance. This application physically defragments the Windows registry file to give it the proper linear structure.
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 2)   Advanced Registry Doctor Pro 8.8.8.21
Advanced Registry Doctor (ARD) will cure your registry and thus provide a better performance of your Windows OS.
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 3)   Premium Booster 2.8.0.2500
Premium Booster will optimize your PC in just a few easy steps. You will quickly notice that its magic really works and that your Windows becomes more stable if you keep using Premium Booster.
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