Compression software - Software that saves space on a hard drive by compressing large files. It is also used to send large files over the internet. , Encryption software - Software that protects data by running it through an algorithm that requires a specific key. When it is done, the information is unreadable to anyone who does not have the key., Email application - A piece of software that allows you to send and receive emails on your computer. This is usually built into the operating system, but you can get proprietary versions., Defragmentation software - Defragmentation software cleans up the storage devices, particularly when files have been split up to fit on a drive. This is necessary to speed up read times as a computer gets older., Antivirus software - Software that scans your storage and communications for malicious software and tools on your computer., Backup tools - If you want to make sure your data is safe, you can save them on another storage device, either locally (a USB stick or CD) or over the internet.,

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