SugarSync is the world's simplest online backup with remote access, multi computer synchronization and online sharing built in.
- Back up all of your Macs and PCs into a secure personal website that you can access from any computer and your mobile phone
- Keep folders automatically and constantly in sync across Macs, PCs and your personal website
- Access, view and share your files 24/7 from your mobile phone, even when your computers are turned off
- Send any size file no matter how large - from your desktop, the Web or your phone
See here for pricing details.