#2 Apple iCloud

iCloud is a cloud storage and cloud computing service from Apple, and comes with 5GB of free storage. The service allows users to store data such as music and iOS applications on remote computer servers for download to multiple devices such as iOS-based devices running iOS 5 or later, and personal computers running OS X 10.7.2 "Lion" or later, or Microsoft Windows (Windows Vista service pack 2 or later). It also replaces Apple's MobileMe service, acting as a data syncing center for email, contacts, calendars, bookmarks, notes, reminders (to-do lists), iWork documents, photos and other data. The service also allows users to wirelessly back up their iOS devices to iCloud instead of manually doing so using iTunes.

Apple iCloud also works hand in glove with iTunes Match. Match, which is built into the iTunes app, lets you store your entire music collection, no matter where you get your tunes, for just $24.99 a year. Even if you didn't buy the music from Apple, it doesn't count against your storage limits.

Additional space is priced at $20 per year for 10GB, $40 per year for 20GB, and $100 per year for 50GB.

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