Dropbox is probably the most popular cloud storage in the world. They like to use office workers, students and school children. Whatever your work is connected to, it is easier to save any data in the cloud and connect to it from some of your devices.
The android application provides the ability to edit documents in Microsoft Office format. In addition, you can configure the automatic storage of all your photos and videos from the camera. The folder you create can be shared with other users if you send them an invitation. It is also possible to work with each file offline.