If none of this gets close to what you need, though, you might prefer Yunio. Not only does it provide a chunky 1TB for free, but you’re also allocated a further gigabyte for every day you use the service.
Yunio works much like the competition. Files can be added to your account manually, by dragging and dropping, or by syncing any folder. Clients for iOS, Android, Windows, OS X and Linux (and a browser-based interface) means you should be able to access your data just about anywhere.
Any backed-up file or folder may be shared with others by creating a public link. This can be restricted by a password or question (“What is my mobile number?”), and there are options to set an expiration date and a maximum number of downloads.
Downloading files to your own system is as easy as dragging and dropping. Versioning support means the last 10 versions of a file are available in just a few clicks, and there are a few basic file management options (rename, move, copy, send to Recycle Bin).
The Yunio client isn’t particularly sophisticated.