Google Drive For Android, iOS
Google Drive is another online file storage system that’s particularly geared towards Android. What sets it apart is the ability to collaborate with other people, which is made possible through Gmail accounts. Collaborators are allowed to view, comment or edit documents, and changes are visible in real time. 5 GB of free storage is offered. The organized storage method arranges files, which also can be made available offline, into folders and subfolders. Files received as attachments can be quickly viewed, zoomed and printed from a browser without the originating application. Photos of printed text can also be converted to a Google document. Google Drive for iOS is currently limited to read-only.