System Cleaner 5 is a PC tool which as the title might suggest, clean your system of outdated registry valies, thereby ensuring that your Windows 7 PC runs at peak performance. It is a shareware drive cleaning application that's reliable, user friendly, well-designed and comprehensive.
Here are some screenshots to illustrate the features and user interface of this application:
Wise Registry Cleaner Free
Auslogics Registry Cleaner
Registry Reviver
Window Registry Repair
Eusing Free Registry Cleaner