A backup system having a plurality of accounts for copying selected data between one or more account user computers and a system computer where an account user's computer connects to the system computer via the Internet. Selected data is copied between the account user's computer and the system computer including, documents, media files, and email in any file type or format. Additionally, the system is compatible with all types of computers, including personal data assistants and mobile telephones, and all types of operating systems. All of the software to operate the system is resident on the system computer with no hardware or software required on the account user computer beyond a conventional web browser. The system also includes a scheduler, a contacts manager, a reminder generator and file transfer system for third-party users.