Ellis Hamburger, in a story on "The Verge" dated April 24, talks about Google Drive, which was launched that day. Google Drive provides 5GB of free storage and Google Docs integration. Users can upgrade to 25GB of space for $2.49 a month, to 100GB for $4.99 a month, or to 1TB for $49.99 a month, and upgrading to a paid account will expand your Gmail storage to 25GB. As Hamburger says, "It enters a scene crowded with competitors besides Dropbox that let you sync multiple folders, collaborate with friends, and stream data to your mobile device"
The Hamburger article compares Google Drive with Dropbox, SugarSync, Insync, SkyDrive, Mozy Stash, SpiderOak, AVG LiveKive, Wuala by LaCie, Box, Syncplicity, LogMeIn Cubby, and Apple's iCloud. All are compared based on the amount of free storage offered, whether there is version tracking, how long or how many versions of a document are saved, whether there is multiple folder syncing, whether you can download your files to a mobile device, whether media streaming is provided, file size limits, and many other criteria.
You can see the entire article here: Google Drive compared to the competition