Amazon are rolling out there Cloud Drive service with desktop apps for Mac and Windows. There's an Android App but no iOS App as yet. Here at The MacDoctor we can't see it taking the cloud storage crown from Dropbox just yet, but it's good to have another big player in the game. And those Apple buying Dropbox rumours still persist.
Let us know if you're using or thinking of using Cloud Drive and the experience you have. We'll definitely give it a spin over the next few days and see what it brings to the party.