In short A backup utility is a program that is designed to create a copy of data in a secondary location for safekeeping.
Backup Tools are computer programs used to perform backup; they create supplementary exact copies of files, databases or entire computers. These programs may later use the supplementary copies to restore the original contents in the event of data loss
In the complex computing environments typical of many organizations today, it is common for IT teams to rely on a variety of different backup utilities to create copies of data on different systems. One utility might be used specifically to backup desktops and laptops, while another may be used to protect data on physical servers and a yet another for virtual servers. A backup utility may be specific to a backup target or may be designed to work with a variety of targets, backing up data from many devices to disk, tape or the cloud.