Google Drive: You can store Docs, Games, softwares, etc on online Google Drive. It offers the free storage of 5 GB and can be increased when you opt for the paid version. The approximate annual price for 20 GB is $29.88 and for 100 GB it is $59.88. The allowed maximum file size is 10 GB. Not more than this size. It opens smoothly on both Windows and MAC. You can also access your data anywhere via Android and iOS operating systems.
Dropbox: It is also one of the most popular cloud storage device. It is quite simple and users can easily access it. It offers only 2 GB of free storage with the free account. By referring others, it can be increased up to 18 GB. You can also share your Drop box files with your friends, only you need to invite them. For more storage, you can request for the paid version. The maximum file size allowed is 300 MB via browser, unlimited via desktop. It supports – Windows, Mac, Linux and Mobile apps – Android, iOS and Blackberry.
Apple iCloud: It also offers the 5 GB free storage to its users. The approximate annual price for 20 GB is $40 and the approximate annual price for 50 GB is $100. The maximum file size allowed is 25 MB for free users and 250 MB for paid users. Like the Google Drive, it also supports Windows and MAC. The supported mobile app is only iOS operating system.
Microsoft SkyDrive: If you are thinking for good cloud storage device then SkyDrive will be the best option for you. You can store excel spreadsheets, oneNotebooks, etc. It offers the maximum 7 GB free storage only. The approximate annual price for 20 GB is $10 and the approximate annual price for 100 GB is $50. It supports both Desktop and Mobile apps including Windows, Mac, iOS and Windows Phone.
Box: Box offers the 5 GB free storage to users. Users can also pay $180 for 1 TB of stoarage capacity. Hence, if you thinking to upload unlimited number of files then I will be the best option for you.