PureSync is an app which allows you to backup your pen drive automatically. Once you connect your pen drive, the contents of the pen drive are copied automatically to a particular folder.
It has a simple and easy to understand user interface, you can add folders and files via drag and drop, tooltips show help on steps and inputs. You can also set up a backup via the context menu of Explorer. The backup can scheduled according to your wish. You may set it to backup every x minutes, hours, days, weeks or months. When a particular file is changed or a new one is added, it will automatically backup the file. Well, these were some of the features of this software. You need to try it out and check it out yourself.