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Dropbox is no frills cloud storage, but it works really well and it's really fast. Put it all together and that's been enough to make it the most popular personal cloud storage service of all. What I've already really liked about Dropbox is that I can use it just like it was any other network drive, with pretty much any file manager on any operating system. For example, in the screenshot above you're seeing Dropbox on Linux Mint with the Cinnamon desktop interface.
Dropbox's free version offers only 2GBs of storage. The Pro version will enable you to go up to 500GBs of storage for $499 per year. If you have a SMB, what you'll really want is Dropbox for Business. This runs $15 a month per user and an annual pricing of $485 and $125 a user a year after the first 5 users. The nice thing about this top price tier is that each account get unlimited storage.
Google Drive takes the tried and true Google Docs cloud-based office software and adds simple, easy to use file storage to it. Like Dropbox, it integrates with Windows and Mac file systems. I'm sorry — and annoyed — to report that, despite years of promises, Google Drive still doesn't support Linux. Enough already Google! Google Drive does, however, support Chrome OS, Android, and iOS.
Another nice feature is that Google Drive enables you to share and collaborate on any kind of file, including documents, music, images, and videos. In addition, Any content you create in Google Docs doesn't count against your storage quota.
Speaking of storage, Google Drive comes with 15GB of free storage. This storage space is also used for your Google+ Photos and Gmail.
The big feature of OneDrive, Microsoft's newly renamed SkyDrive, is its integration with Windows 8.x and Office Online. You can also use it with Windows 7 and up, and for OS X, iOS, Android, and Windows Phone. If your business is committed to Windows, then your choices will be between Box and OneDrive.
OneDrive comes with 7 GBs of free storage per account. With an Office 365 Home or Personal subscription you get an additional 20 GBs. You can also pay for more storage: for $25 annually you can get 50GBs; $50 gets you 100GB and for $100 you can add 200GBs.
There's also Microsoft OneDrive for Business. This enterprise-grade storage is not just an upgrade of OneDrive. It's built on SharePoint Workplace, which means Microsoft adds metadata to your OneDrive for Business files to make them more useful. There are a variety of plans. In each one every user account gets 25 GBs of secure online storage as well as 50 GBs for Exchange email. Microsoft is also promising that the minimum account will go up to a monstrous 1TB per account.