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2.7 SYSTEM SOFTWARE, 2.Utility Programs, Proprietary software Privately…

- - - - Function : Helps user to keep track of files and folders.
      - >Windows Explorer
        >Finder
  - - - Function : To search for and removes unnecessary files.
      - >Windows Disk Cleanup
        >Avast Cleanup Premium
  - - - Function: To shrink size of a file
        
        Compressed files sometimes are called zipped files
  - - - Function: To protect a computer against viruses by identifying and removing any computer viruses found in memory, on storage media or on incoming files
      - >Kaspersky Antivirus
        >Avira Antivirus
  - - - Function: To detects and deletes spyware
        
        Spyware is a program placed on a computer without the user's knowledge that secretly collects information about the user.
      - >Spyware Protection
        >SpyHunter
  - - - Adware is a software that displays unwanted ads when a user is online, collects marketing data and other information without the user's knowledge
      - >AdwCleaner
        >Bitdefender
  - - - Function :To reorganizes files and unused space on a hard disk for optimal efficiency.
      - >WinContig
        >MyDefrag
  - - - Function of restore utility:
        Restore data from a backup to the original storage location or to a replacement device