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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.
Let's say that while you love the idea of cloud storage, the thought of having your data naked out there somewhere on the cloud gives you the heebie-jeebies. In that case, be sure to check out SpiderOak.
Long before most people were worrying about the NSA, SpiderOak set up a cloud storage system where even they can't see what files you have in their systems or their associated metadata. Indeed, in its "zero knowledge" design they don't even see your password or encryption keys. Oh, and did I mention that your files must be encrypted? If privacy is what you want, then SpiderOak is for you.
Individual accounts start with 2 GB of free storage. Upgrades come in 100 GB increments, and cost $10 a month or $100 a year. The SpiderOak Blue business service starts at $600 a month, with a terabyte of storage for up to 100 users.