Cacheman is a utility designed to improve the performance of your computer by optimizing the disk cache, memory and a number of other settings. Cacheman is able to prevent frequent paging to the hard disk, resulting in improved performance, system reaction time and stability. Wizards and predefined profiles make it suitable for novices and yet it is also powerful and versatile enough for the more experienced user.

7tools Partition Manager
7tools Partition Manager 2003 affords everything you may need for managing partitions; it is suitable for both everyday and rare needs, for either inexperienced user or advanced professional.

DSF
an advanced disk manage tool can effectively enlarge your harddisk space even more than 20%,can analyse the files full of your harddisk, know what the file is that wasted most of your harddisk space,make you use your harddisk more efficient !

Acronis Power Utilities
Acronis Power Utilities includes five system utilities available in one suite. It helps you to install a new hard disk, back up or restore hard drive partitions, protect your privacy against spyware, adware, keyloggers, and other malicious programs.

GetDataBack for NTFS
GetDataBack is a highly advanced data recovery software, which will help you to get your data back when your drive's partition table, boot record, Master File Table or root directory is corrupt or lost, when a virus has hit the drive...

DiskVision
By drawing files and folders as easy-to-understand nested rectangles, DiskVision shows, visually, how much space each file and folder consumes. This makes it easy to track down files, folders, and applications that are wasting space.