MyDefrag4.1.1 (open source)For Windows 2000/2003/XP/Vista/2008/X64 MyDefrag (formerly JKDefrag) is a disk defragmenter and optimizer tools. It is very easy to use, fast, low overhead, with several optimization strategies, and can handle floppies, USB disks, memory sticks, and anything else that looks like a disk to Windows completely automatic ways.
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