It is a system software designed to help in management and tuning of operating systems, computer hardwares and different application softwares.A single piece of utility software is usually called a utility or a tool. Utilities are those application programs that assist the computer by performing house-keeping functions like backing up disk or scanning/cleaning viruses.A utility program carries out some of the common tasks, while using a computer system. Utility software is also known as service program, service tool or utility routine. It differs from applications mostly in terms of size, complexity and function. Utility programs are bundled with operating systems. However, these programs are also available in a separate package and that’s why they are sometimes considered separate from system software. Utilities include Disk Compression, Backup, Virus Protection Utilities (Antivirus), Disk Defragmentation Utilities etc.1.Disk CompressionIt is a utility software which perform the task of emphasis on the drive, so that more space is available for additional data to be stored.2.BackupIt can make copy of all information stored on a disk and restore either the entire disk files (e.g. an event of disk failure) or selected files (e.g. an event of accidental deletion) on the user defined storage.3. Disk DefragmenterIt can detect computer files, whose contents are broken across several locations on the hard disk and move these fragments in a particular location to increase storage efficiency.4. Disk Checker and Disk Cleaner Disk Checker is a fully-featured disk diagnostics and repairing tool with backup ability.5.Disk Partition ToolIt is an utility tool which can divide an individual drive into multiple logical drives, each with its own file system which can be mounted by the operating system and treated as an individual drive.