Time Machine
Commercial
Time Machine backs up all of your files to an external hard drive so that you can restore them later or see how they looked in the past.
SuperDuper!
Freemium
SuperDuper lets you quickly back up your files or your entire hard drive, with multiple options for compression and storage location.
Carbon Copy Cloner
Commercial
Carbon Copy Cloner makes drive backup straightforward and accessible, even if you're uncomfortable with performing this process.
Compare DriveImage XML with alternatives
Compare Time Machine and DriveImage XML and decide which is most suitable for you.
Compare Carbon Copy Cloner and DriveImage XML and decide which is most suitable for you.
Compare SuperDuper! and DriveImage XML and decide which is most suitable for you.