#3 Box

It is more of a business-collaboration and work-flow solution for enterprise companies than a storage service; but if you are looking towards something like this, then Box fits the bill perfectly. The company has adopted a freemium business model, and provides 5 GB of free storage for personal accounts. A mobile version of the service is available for Android, BlackBerry, iOS, WebOS, and Windows Phone devices. The personal editions also offer 25GB for $9.99 a month and 50GB for $19.99. Business edition starts at $15 a month for a whopping 1,000GB of storage.

You can use it for the business purposes since it provides amazing features like- Invite others to view, edit and move; Track file versions; Post comments and discussions; Assign and manage tasks; Real-time activity feed; Google Docs integration. In addition, the service also includes Box OneCloud, for improved mobile work-flow, and Online Workspaces. There are also a variety of business-specific apps included within the service.

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