Amazon Cloud Drive vs Google Drive

Amazon Cloud Drive
Amazon Cloud Drive is a web storage application unveiled by Amazon. It provides users with 5 gigabytes of storage space by default, with further storage space costing one dollar per gigabyte per year.
Google Drive
Online file storage and syncing service working as a file system for other Google's services. Allows to sync files between all your computers and mobile devices or collaborate on files with your team and partners. Version control, OCR, powerful online viewer. Provides 5 GB free disk space. Google Drive free alternatives are: OneDrive, Box, Dropbox