Air Explorer support the next clouds:
As a cloud manager, Air Explorer supports the best cloud storage services. What’s more, you can add any server to Air Explorer using popular protocols such as WebDav, FTP, SFT and S3, giving you even more options for effectively storing and managing your files.
FTP
SFTP
WebDav
You can add and use any WebDAV server such as:
-cloudme.com,
-powerfolder.com,
-opendrive.com,
-owndrive.com,...
Strato Hidrive
5 GB of free storage Sign up: strato.es
Datto Drive
2 GB of free storage Sign up: datto.com
Stack Storage
Mail.com
2 GB of free storage Sign up: mail.com
4shared
16 GB of free storage Sign up: 4shared.com
SharePoint Online
SharePoint China
Koofr
10GB of free storage Sign up: koofr.eu
Backblaze
Infinicloud
10GB of free storage Sign up: infini-cloud.net
ADrive
Jottacloud
5 GB of free storage Sign up: jottacloud.com
Huawei
5 GB of free storage Sign up: huawei.com
Digiboxx
20 GB of free storage Sign up: digiboxx.com
PikPak
6 GB of free storage Sign up: mypikpak.com