WebDrive - WebDrive File Access Client allows you to open and edit server-based files without the additional step of downloading the file.
ifttt - IFTTT puts the internet to work for you. Create simple connections between the products you use every day.
NetDrive - Cloud storage as hard disk
FileCloud - FileCloud is an enterprise file share, sync and mobile access solution.
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!
CloudMounter - CloudMounter for Mac OS X: map Dropbox as network drive, mount OneDrive, Google Drive and Amazon S3; FTP client and WebDAV client.