Kofax CloudDocs - Kofax CloudDocs is a sophisticated cloud-based storage and protection solution that provides businesses with a simple yet powerful way to safeguard their important files.

Rclone - rsync for cloud storage.

Proton Drive - Proton Drive is a comprehensive protection and storage solution that is easy to use and provides complete synchronization and remote support.

odrive - odrive aggregates all cloud storage. Access, sync, share, and encrypt everything in one place. Integrations to 20+ storage services, desktop sync, Linux support, placeholder files, zero-knowledge-encryption, web client, advanced sharing, and more!

J-Doc - J-Doc is a file storage and protection application that allows you to access your files from anywhere in the world and keep them safe and secure.

Air Explorer - Air Explorer is a software to manage all your multiple cloud drives (like Dropbox, Onedrive, Google Drive, Mega, Mediafire, Box, Hidrive, Yandex, Baidu,...) as well as WebDav and FTP connections.