76794 Remote Website Backup Software

Hi Programmers, I need a software that acts like a a backup utility for all my websites hosted on remote servers or virtual hosting companies. It should handle unlimited websites and can connect simultaneously as I set it. It should download only the updates or changes to previously downloaded backups and update the files as needed. It should backup any files I want, including dynamically generated pages, scripts, uploaded files, mysql databases etc. Basically all files or directories I want to backup. The files must be saved to my harddrive and can be used to restore sites in case of server breakdowns or harddisk failure of webhosts. I will own resell rights to the software. Central Online Licensing System will enable me to activate or deactivate users. Demo and Full version should be provided. You can ask questions at PMB. Thank you!