If you intend to make Dropbox sync with another account, MultCloud can definitely be an ideal free web tool for you. With its help, you’re able to change Dropbox account on Mac, Windows or any other devices without logging out. Because MultCloud puts all cloud drives in one place for the centralized management, which means you can not only sync Dropbox accounts, but also copy or transfer files between Dropbox and other cloud services such as Evernote integration with Dropbox just through one simple interface. Schedule task is also available which runs even after power off.
*Update: MultCloud added a special Cloud Sync service now, you can use it to do sync cloud drive task directly. MultCloud provides 8 normal sync ways.