Back your WordPress blog up to any one of 40 storage clouds including S3, RackSpace Cloud Files, SkyDrive, DropBox, Gmail, Box.net, RackSpace Cloud Fi
The StorageMadeEasy Multi-Cloud File Download plug-in enables you to share files for download, via a widget, for over 30 cloud storage providers.
Please use https://wordpress.org/plugins/storagemadeeasy-multicloud-files-backup/. This plugin is deprecated and no longer maintained.
This plugin is created for easy adding files from Yandex Disk service to posts or pages of your wordpress site.
Filepress is a plugin that allows you to edit your WordPress files from any file browser.