If you want your PC to work effectively, you should clean your Windows Registry regularly. You must know, it is not an easy task. From time to time your Registry clutters. The reason for this problem is that Windows doesn't efficiently clean up after itself. It steadily creates new entries, however, rarely removes them after they're no longer necessary for you.
Referring to the slow PC performance the following product analysis was done: Advanced Windows Care, RegSeeker, jv16 PowerTools, Registry First Aid, and RegSupreme.
Registry First Aid fixes and compacts your Registry. It is the most confident program and safe as well. The interface is clean and easy to navigate, and the program includes a Registry defragger, a Registry searching tool, and a built-in automatic backup module. Registry First Aid supports all versions of Windows. However, it fixes only 14 entries at a time.
RegSupreme includes a Registry cleaner as well as a Registry compactor. There are only two levels of error detection, safe and aggressive. And the program has almost no extras. The only one of value suggests a way to search for specific keywords in the Registry. RegSupreme supports every version of Windows.
RegSeeker has Registry cleaner and a handful of other Registry-focused utilities. The tools provide a keyword finder, a utility to examine installed application Registry entries, assorted histories (for instance, Internet Explorer and Start-menu items) Startup entries and a tool to tweak about 24 XP settings. The program has no automatic restore function.
Advanced WindowsCare comes with other tools besides a Registry cleaner. It also deters and removes
spyware, optimizes your PC, manages your Startup items, and removes junk files. The program uses a minimalist approach. Each item sports a cautionary orange or red symbol (with no legend), the Registry key location and value, and an error description (obsolete software key or missing MUI reference, for instance). The program supports Windows 2000, XP, and Vista.
jv16 PowerTools has a Registry cleaner and compactor. Additionally, among other tools are utilities to manage the Registry, find and replace entries, monitor Registry changes. Moreover, it provides file finders and cleaners, duplicate finders, and an assortment of system management tools. jv16 PowerTools supports every version of Windows and comes with a full-featured, 30-day trial.
Resources:
Review on Registry Cleaners
How to clean up your PC?