KCleaner 3.8.7 | Portable
KCleaner is designed to be the most efficient Hard Disk cleaner, tracking every useless byte. It is the first product of this kind featuring a full automatic mode, which works in background so that you don't have to care about when to launch it. As a proof of its efficiency, it often finds up to many GB not even seen by its competitors so… give KCleaner a try! And if data security is something you are interested in, you'll love the secured file deletion methods proposed by KCleaner, making deleted files unrecoverable by any known mean.
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