Box is one of those that offer such a service, and Box Sync is its official desktop client.
With Box Sync, files in your setup can be sent to the cloud storage in real time.
Features and Highlights
Box Sync relies on Edge net internet ride engine.

Box Syncs configs menu only provides two options.
There is no option to change the folder location.
It can also be done by simply double-clicking on its tray icon.

A lock icon is automatically added to every locked file.
Box Syncs context menu also allows you to view the selected file in the web software.
As for Box Sync, it is not as feature-rich as OneDrive.
