A system for onsite backup of internet-based data is provided. The system includes a central computer, a client computer, a communications link between the central computer and the Internet, and a communications link between the client computer and the Internet. The system also includes at least one database containing a plurality of data records accessible by the central computer, each data record containing a client identification number. Software executing on the central computer receives a data backup request, and software executing on the central computer transmits the data backup to the client computer.