EasySector BackupSF Pro lets you backup 50 websites, 500 MySql Databases in total and offers 3 years free support. You can backup 10 databases per website. The software runs on Windows OS and is very much user friendly. Wizard like instructions make it easier to save backup task and to schedule it. Your FTP username and password will be stored in encrypted form. You can get all minor version upgrades free with your existing license.
EasySector BackupSF Pro costs 55.00 USD.