MBS Disk Space Analyzer 

If you want to find out and clean unwanted, temporary and junk files on your hard disk. If you want to view your disk space utilization in various formats where you can see how actually your disk space is being used, then this tool is for you
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PC Power Optimizer Lite 

PC Power Optimizer Lite has several categories and sub modules to optimize your Windows XP. You can customize menu appearance, Start menu and Taskbar, see system files, folder and change their settings. It provides privacy and security of high level.
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The Mop 

The Mop is easy-to-use disk cleaner able to search garbage files in all folders on all hard disk. The Mop shows the decrease of performance made by garbage files. Using this tool can speed up the computer and get more free space to keep useful files.
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