1)   Free Ultra Shredder 1.1.0.0
Free Ultra Shredder literally destroys files, free space and your Recycle Bin contents instead of only deleting them. That means your data contents once overwritten and destroyed It can't be recovered
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 2)   Disk Cleanup Software 3.0.1.5
Data and file sanitation software provide free space in your system by permanently cleaning up hard disk, removing temporary files and folders. Data wiper wipes up all online offline internet activity, typed URL, visited website and downloaded files.
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