Amazon Drive

Cloud Drive is a platform for cloud file storage offered by Amazon. You'll need to open up a free account, which will give you 5 gigabytes that can be used as you wish.

The desktop application will make your work easier since it allows you to keep a copy of all your Cloud Drive content saved on your computer.

To add content, you just need to drag and drop folders from your computer to the application and they will sync in the background as you go on working, just like with Dropbox.

One of the advantages is that you can access your content using the Kindle Fire or the Android app, which will automatically sync the pictures from your smartphone or tablet.