Free Disk Utilities Software for Windows

Need a good and free utilities software for your Windows. All you need is download it from their website. Here the lists :

Defraggler
www.defraggler.com
This won't clear the Fraggles out of the rock, but it does defragment a hard disk—or, in a nice twist, individual files. If you're not sure what needs defragging, it'll provide a list of files that need it. The single EXE file can run from a thumb drive.

SystemRescueCD
www.sysresccd.org
How does a full Linux system on a bootable CD-ROM help Windows users? By providing access to all sorts of systems and drives (even network drives) when your computer won't start. It may provide the best (and only) access you can get after a fatal disk catastrophe.

GParted-LiveCD
gparted-livecd.tuxfamily.org
Not just another Linux system for a bootable CD, the GParted-LiveCD tool is for setting up disk partitions as fast and painlessly as possible. It supports file systems from FAT32 to NTFS and will graphically reorganize the partitions on your drive as you desire.

Source : pcmag.com