Users of Mac OSX computers never easy to find free software for your computer and even more if it is one for backup of all important information.
PsyncX Download is free and does what you expect to perform in a couple of steps. This software gives you save backups of your hard and folders and if you need it, you can restore them.
The backup process is automatic, just a matter of configuring to do so at a certain time or times and frequently. User Whole backs of what is worth preserving from the first time you start the program and if it is kept constant backups of changes made to the same files. Using the program requires at least Mac OSX 10.2. Source