Google Drive is a new free service from Google to kill Dropbox, but in general it is free for the first 5GB, while you can get an upgrade to 25GB for $2.50 a month. They say the service is available for PCs, Macs, Android devices, and soon iOS devices.
According to Mercury News, '... the success of Drive will ride largely on whether Google can differentiate its offering from already established fast-growing cloud storage startups that were in the market first, such as Dropbox and Box, as well as Microsoft's SkyDrive service and big consumer media competitors like Apple's iCloud and Amazon's Cloud Drive. ... Existing Google Docs files, the centerpiece of Google's existing cloud storage offering, will move to the Google Drive service once users download apps and install the new service."
Google Drive URL could be found h3r3