http://www.opencart.com/index.php?route ... on_id=6880
Very easy to use - just upload the files, install the extension from the backend and synchronize to your Google Drive™
Supported Backups:
- Database only
- Database only ZIP-archived
- Database and site files ZIP-archived
- Database and site files unarchived
Requirements (usually these are default settings of hosting providers) :
- PHP 5
- SimpleXMLElement enabled
- ZipArchive enabled
- Safe mode off, set_time_limit function is used
You must have also have a Google account

http://www.opencart.com/index.php?route ... on_id=6880
Other extensions:
http://www.opencart.com/index.php?route ... e=andy2012
Newsletter Enhancements - V2 - vQmod
http://www.opencart.com/index.php?route ... on_id=4776
Secure Cloud Backup for Opencart : Automatically Backup Database and entire Site
http://www.opencart.com/index.php?route ... on_id=5150