sciebo 

sciebo is a non-commercial cloud storage service for research, studying and teaching. It is operated jointly by 22 universities in NRW and funded by the state of NRW. The data will be stored and processed exclusively at three locations in NRW (Münster, Bonn, Duisburg-Essen).Thereby, they are protected by Germany's strict data protection law.

With this program, you can get 30 GB of free storage for every student and employee, synchronize your documents on all your devices (computer, smartphone,tablet), grant access to your documents to other students and stuff as well as external project partners, and more.