AirFile lets you manage and access all your clouds in one place. You don't need to use each application for each cloud.
AirFile supports most of popular clouds: Dropbox, Box, Google Drive, OneDrive, OneDrive for Business, Office 365 Sharepoint, Bitcasa, Copy, SugarSync, Amazon S3, DreamObjects. It also supports many network servers: WebDAV, FTP, SFTP.