Windows Tools Pack - Windows Registry Repair Pro + Windows Clean-Up Pro + FreeMem Professional [Registered versions]
Windows Registry Repair Pro I've used, its pretty damn good.
Windows Clean-up Pro is damn good, actually its great and I'll still use it.
Free Memory Pro is good to keep huge games up and working on your PC. Free memory program takes memory from all your other running proccesses, makes it go to the minimul memory usage and it helps when you are running huge games.
Windows Pack Tools
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