Alternatives to Synology Drive

Cloud storage client

Client for the Google Drive storage service

Real time file synchronisation software

Client for the Dropbox cloud storage service

Syncs files between computers and MEGA Cloud drives

Client for Proton Drive

Desktop sync client for Nextcloud software products

Client for the Box cloud storage service

Store, share and access files from anywhere

Desktop syncing client for ownCloud

Tool to manage Synology NAS's across a LAN

Open-source Dropbox client