Microsoft's SKYDRIVE
Compare
SkyDrive 
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Apple iCloud 
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Google Drive 
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Dropbox 
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Cloud storage 
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Windows 
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Mac 
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Web 
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Remote access 
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iPhone and iPad 
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Windows Phone 
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Android 
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** 
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Mobile web 
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View and edit online for free 
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Edit online at the same time as others 
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Track versions 
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Free note-taking apps for your phone 
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Online slide shows 
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Email slide shows 
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Post to Facebook and Twitter 
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Captions 
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Show geotags 
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Share with anyone 
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Online viewing for Office files 
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Large file support (free) 
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*iCloud lets you store only specific types of files like photos for free. To store iWork documents in the cloud, you need to purchase iWork apps separately.
**SkyDrive works with the Microsoft OneNote mobile app for Android to capture anything on the go.
***Google Drive is focused on document storage. Google offers separate products—Google+ and Picasa—for photo storage and sharing.
