RegToy is a collection of useful utilities : tweaking, window manager, shell context menu, registry cleaner, file renamer, screen capture, memory cleaner , disk cleaner , much more. It also is available in some languages.
RegToy provides access to a variety of Windows XP tweaks and settings that allow you to customize your system, set restrictions and improve performance. The software organizes all tweaks by category, and also includes a wizard and a search tool that lets you find specific tweaks across all categories by keyword. RegToy comes with several additional utilities to find and remove invalid registry entries, cycle your desktop wallpaper, clean your hard drive, clear system memory, schedule shutdowns and more.
RegToy is a useful software that was designed for WindowsXP , is used to Tweak WindowsXP , and some utilities like a remaner to change the filenames and a wallpaper changer. With RegToy you can optimize the performance of your computer and customize your system to suit your needs.

The license of this software is Freeware, you can free download and free use this registry cleaner software.