Apple iCloud

 Apple's iCloud is the company's version of cloud storage, essentially providing each iCloud user with a sort of virtual storage space for apps, music, photos, documents, email and calendars. iCloud users receive 5GB of free storage space when they sign up, with upgrades available at a cost.

Wireless devices automatically upload photos, songs or other data to iCloud, which then distributes them to the user's other devices, wirelessly. Contacts, email and calendar details are automatically synchronized across devices. Indeed, iCloud's main feature is that it performs all of its functions automatically, eliminating any need for the user to manage files or manually share them wirelessly. iCloud is compatible with Apple wireless devices, Apple computers and PCs, and Apple TV. Photo streaming does not count towards using any of the free 5GB of storage included with an account. iCloud is included with iOS 5 and integrates itself into apps automatically.