MyDefrag is a FREE disk defragmenter and optimizer (a maintenance utility to make your harddisk faster) for Windows 2000, 2003, XP, Vista, 2008, and for X64. MyDefrag is a fast, low overhead, with many optimization strategies, and it can handle floppies, USB disks, memory sticks, and anything else that looks like a disk to Windows.

For advanced users, MyDefrag also comes with a set of easy to use scripts for endusers, a scripting engine for demanding users, a screensaver, and a combined Windows plus commandline version that can be scheduled by the Windows task scheduler or for use from administrator scripts. As compared to other disk defragmenter out there, MyDefrag is extremely solid because it is based on the standard defragmentation API by Microsoft, a system library that is included in Windows 2000, 2003, XP, Vista, and 2008.

Download MyDefrag from here.