File Repair
Attempts to correct issues within a file, restoring them to its original working state.
Backups
Creates a store of the current operating system. This may be either a full backup or through incremental backups.
Compression
Reduces the size of a file in order to take up less storage but with the requirement that they are then extracted before use.
Depending on the compression algorithm used, data could be lost, i.e., by reducing the quality of an MP3 file.
Disk Defragmentation
Reorganises files on a hard disk, clumping fragments of files together, and free storage together.
Anti-malware
Protects your computer and files from malware.