PowerTools Lite 2013
PowerTools Lite 2013 is a freeware edition of jv16 PowerTools - the ultimate Windows optimization and tuneup utility suite. PowerTools Lite 2013 allows you to easily clean up your computer from unneeded data, unused temp files, registry left overs and automatically fix registry errors. A 16-year-old Finnish student called Jouni Vuorio started building RegCleaner in 1998. In 2001 he started the development of a full Windows cleaning and tuneup utility suite jv16 PowerTools. PowerTools Lite is the freeware version. You have to register your email address
Website with the download
Safely cleans junk out of the Windows 2000/XP system registry. All changes made to the registry are fully restorable to it's original condition. You can make an exclusion list of registry entries that RegScrubXP will not display as problems.
You can sift through a list of file extensions, company names, "run upon startup" programs, Internet Explorer history, and uninstall programs to delete what you think is junk. Tweak the registry with the easy to use tweaker! Additional Tips & Tweaks help file with dozens of XP tweaks!
There is a little older, but still usable version 3.25, but also a new version 5.1 which however requires Microsoft .Net Framework 3.5.
Download 3.25 Download 5.1
The Registry is a heart and soul of any Windows system. It contains information that controls how your Windows appears and how it behaves. Most applications today use registry to store configuration and other important data. When you install application, new registry entries created. These entries should be deleted automatically when you uninstall the application. Unfortunately, it does not always work that way. Sometimes you find that several applications fail to remove their own registry entries. These entries will become obsolete.
After a long period, after installing and uninstalling a lot number of applications, your Windows registry may contain a large number of obsolete entries. These will significantly increase the registry size and thus will slow down your computer, because Windows will need more time to load, search, and read data from registry.
To keep your computer in top performance, it is recommended to periodically clean your Windows registry.
Eusing Free Registry Defrag
Eusing Free Registry Defrag can defragment and compact the Windows Registry in less than a minute. It will scan through the registry to remove any slack space, reducing the registry size and ultimately the amount of RAM the registry takes up, and improving your computer performance. It does NOT change the contents of the registry in any way, nor does it physically defrag the registry files on the drive. The optimization is simply compacting the registry hives to the minimum size possible. The software is free, it's simple to use, and it speeds up your PC.
Website Eusing Sotware Download
Wise Registry Cleaner
Wise Registry Cleaner can locate and correct problems in the Windows registry, such as missing references to shared DLLs, unused registration entries for file extensions, and missing referenced application paths. Wise Registry Cleaner can also mark the registry items which are safe to remove as well as those which are not advisable to remove. And it will automatically back up the deleted registry. It supports a manual backup for the whole registry before running operations. In essence, this product is safer than other registry tools. Wise Registry Cleaner also allows users to delete system restore points.