RegClean Pro
RegClean Pro fixes invalid registry entries in a few simple clicks.
Advanced Registry Doctor Pro
Healthy Registry for Windows 7, Vista and XP computers
Aiseesoft Registry Optimizer
It can maintain the integrity of your Windows Registry.
Premium Booster
feel the power of rejuvinated windows as now your programs will run faster.
Registry Optimizer Free
freely remove invalid registry entries, protect privacy, maximize pc's capacity.
Simnet Registry Defrag 2011
defrag and optimize your windows system registry to boost your pc performance.