Utility softwares are programs which help in improving the capability of operating systems. Here are some of the recommended utilties software.
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Utilites Software

Ccleaner - It cleans up invalid Registry, Junk and Temporary Files.

I helps in increases the system speed.

WinRar - It opens all zip archive and Rar files

7zip - It opens all .tar files.

Malwarebytes - It removes malwares.