Mozy is the simple way to back up all the important stuff on your computer so in the event of disaster, your data is still retrievable. There's no need to worry about external hardware or tedious manual backups; Simply download Mozy, select the types of files you want to back up, and Mozy does the rest. A copy of your files is safely stored in secure, offsite data centers.
Mozy offers home users 2 GB of backup space for free. There's no credit card, no monthly payment or fee, and no expiration date. Just free, secure online backup for as long as you want it. (You can even earn free space for each friend you refer.) Or purchase unlimited storage space for only $4.95 per month.
Both the free and unlimited versions offer you open/locked file support, byte-level differential backups, 30-day file version archives, bandwidth throttling, private key encryption (optional), and multiple data restoration methods.
Mac OS X 10.5 Intel
Mac OS X 10.6 Intel
Mac OS X 10.7
Mac OS X 10.5 PPC