SugarSync

SugarSync is an online file sync-and-share service. 

Users are able to upload any files or folders to SugarSync's servers, access those files from any device and share those files with other users. When a file is modified or deleted, those updates will be synched to all devices. The service features a dashboard through which a service administrator can manage user accounts, storage usage, pooled storage and set storage limits on a per-user basis. SugarSync also provides features such as file encryption and automatic backups.

SugarSync is available through  either a monthly or yearly subscription.