UltraDefrag

Open Source defragmentation tool

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UltraDefrag is an Open Source disk defragmentation tool that offers fast defragmenting, using a kernel based driver. It offers a simple GUI with a cluster map display, as well as a command-line interface and scheduling option. The program supports full defragmentation and space defragmentation (compacting), and allows you to include/exclude files or folders based on their name or size. Other features include HTML reports and boot time defragmentation.

Freeware