MultCloud is a service that allows me to tie them all together in one place. MultCloud does more than just provide a single log-in for all of the cloud services that I use. It also allows me to move files between services with a simple drag-and-drop.
By connecting your cloud storage services through MultCloud you create a single dashboard page on which you can view and access the files within all of your cloud storage accounts. To move a file between the services you just select a file from one service and drag it to the other.
Applications for Education
If your school hasn't adopted a standard cloud storage platform for all teachers and students, MultCloud could be a great tool for organizing files strewn across multiple cloud storage services.
H/T to Lifehacker.