1)   Registry Cleaner/Optimizer 1.01
PAL Registry Cleaner/Optimizer is a simple registry cleaner for Windows that safely cleans and repairs registry problems with a single click.
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 2)   Registry Medic 3.0
If so, you need a professional registry cleaner and repair tool - Registry Medic is the answer!
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 3)   Registry Clean Expert 3.69
Registry Clean Expert scans the Windows registry and finds incorrect or obsolete information in it. By fixing these obsolete information, your system will run faster and error free. Also features registry backup/restore, startup and BHO organizer.
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 4)   Advanced Registry Doctor Lite 6.0.9.12
Advanced Registry Doctor (ARD) will cure your registry and thus provide a better performance of your Windows OS.
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