Software that is created to assist in the management of computers is called Utilities. Utility software manages hardware, application software, as well as a computer's operating system There are several different kinds of utility software such a encryption, text editors, archive, system profilers, and disk defragmenters. Defragmenters re-arrange the fragmented storage on a computer's hard disk drive together in a complete joining segment. This increases efficiency as well as speed when using the information. Disk cleaners remove files that are not needed from a computer's disk, as well as files that take up large amounts of space. A virus scanner is also another popular utility. Virus scanners can perform checks on a whole computer drive or on a single file to ensure that there are no viruses on a computer.