Air Cluster is an application to join all your clouds in a one big cloud. It supports multiple cloud servers as Google Drive, OneDrive, Dropbox, Mega, Box, WebDAV, Naver, Yandex, Baidu, SFTP...
You can create your cluster and add all the cloud accounts you want. Once you have added your accounts you can synchronize, backup or manage your files in the different clouds using a centralized access as if it were a single big cloud. For example you can add several Google Drive accounts to sum all the space .
Air Cluster allows you to configure multiple accounts from the same server. You get extra security thanks to optional file encryption. And the centralized search make your job easier.
With the file synchronization tool of Air Cluster you can sync folder between any cloud or your computer using the total space of all your clouds together.