What is Windows Registry?
The Windows registry is a central hierarchical database in Windows used to store information necessary to configure the system for one or more users, applications, and hardware devices. The registry contains information that is constantly referenced during operation, such as profiles for each user, the applications installed on the computer; and the types of documents each can create, property sheet settings for folders and application icons, what hardware exists on the system; and which ports are being used. Windows registry is a vital part of Windows, if it is damaged, your whole system may be corrupted and cannot be used.

Why do you need a Registry Cleaner?
The Windows registry is a database repository for information about a computer's configuration. The registry keep growing when you use Windows. As it does so, it attracts obsolete and unnecessary information, and gradually becomes cluttered and fragmented. With the growing of the registry, it can degrade the performance of the whole system and cause many weird software problems.

What can XP Registry Cleaner do for you?
XP Registry Cleaner scans the Windows registry and finds incorrect or obsolete information in the registry. By fixing these obsolete information in Windows registry, your system will run faster and error free. The backup/restore function of the tool let you backup your whole Windows Registry so you can use it to restore the registry to the current status in case you encounter some system failure.

In short, XP Registry Cleaner help you get rid of the bloat in Windows registry and achieve a leaner, faster system.