1)   WinClean 2.0
WinClean is a smart and safe tool that boosts your computer efficiency and productivity. It searches the hard drives for junk files, scan the registry and delete broken shortcuts and gives control over startup applications.
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 2)   DTweak 3.15
Tweak a Myriad of Windows Vista Features and Enhance its Performance: With DTweak you can - defragment disks and registers, - clean file and registry sistems, - tune computer performance, - and much more...
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 3)   XTweak 3.15
XTweak is an advanced tweaker and optimizing tool especialy designed for Windows XP/2003: With XTweak you can - defragment disks and registers, - clean file and registry sistems, - tune computer performance, - and much more...
Registry Utility, Security, Backup, Clean, Uninstal, Win, Maintain, Faster, Tune, Vista Windows,

 4)   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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 5)   Best Vista Tune Free 1.2
Best Vista Tune Free allows you to fine-tune your Windows Vista easily and safely. It gives your system the look you want, and optimizes its performance for the tasks you do most often, while cutting CPU and RAM expenses on the tasks you are.
Registry Utility, Security, Backup, Clean, Uninstal, Win, Maintain, Faster, Tune, Vista Windows,

 6)   Best Vista Tune 1.2
Best Vista Tune allows you to fine-tune your Windows Vista easily and safely. It gives your system the look you want, and optimizes its performance for the tasks you do most often, while cutting CPU and RAM expenses on the tasks you are.
Registry Utility, Security, Backup, Clean, Uninstal, Win, Maintain, Faster, Tune, Vista Windows,

 7)   Clean Computer Registry 4.5.32140
MyRegistryCleaner cleans and repairs your computers registry with an easy to use system that will not only speed up your computer but also prevent your computer from crashing in the future. Repair and Prevent Errors on your PC.
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 8)   SIS REGISTRY CLEANER 6.8.02115
Registry Cleaner cleans and repairs your computers registry with an easy to use system that will not only speed up your computer but also prevent your computer from crashing in the future. Repair and Prevent Errors on your PC.
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